Unless you had commie books praising Khmelnytsky, alluding him to the Lenin of his time and reverencing him for "reunification" with Mother-Moscow - then no
I agree that often the generalized and populized narrative about the Uprising being a national liberation war is, well, not true because of the reasons you stated. They are correct.
However, it doesn't actuallly deny the "national" dimension to the Uprising of Khmelnytsky.
The Uprising happened (and so brutally) because of many things:
- Catholic Church and the Polish Counterreformation exerting pressure on the Orthodox
- failure of Union of Brest and Kyivan clergy seething on Poland (it's a long but interesting story)
- the magnates and nobles have wide priveleges and abusing peasants
- the nobility becoming Polish and Catholic on course of assimilation with Poland which alienated it from locals (not just peasants but other classes as well, especially the aforementioned seething priests)
- peasants being raided and failing to see protection from the nobility (which robbed nobility one of major influence tools on peasantry, providing security and peace to their own estates)
- Cossacks being repressed and deprived of rights they wanted and expanding number of employed Cossacks (one of major issues)
- Denied tour to Tavria and Constantinopole

- Khmelnytsky's own issues and much more that resonated and exploded
What I do want to point out is that in practical results, despite the failure of what it aimed to do, it left an impactful legacy in national dimension:
- It got rid of nobility that became alienated to Ukraine
- The Uprising included most of territory of Ukraine and resulted in wiping out significant amount of "occupiers" (forgive me for choosing this word, I can't atm find a better one) - mainly among middle class and nobility, which resulted in Ukraine getting rid of Polish and Lithuanian ties at the time. What it also meant, however, is an emergance of new ruling and middle class from the peasantry.
- Cossacks which left a major cultural impact on Ukraine. Zaporozhians, despite later having different history, imprinted a lot of ideals and organization practices on the rest of Ukraine, allowing Cossacks to rule it around century (1648-1763). The very fact that the social justice could be achieved if you fight was a major thing. I think you probably heard about Western Ukraine in later times, when there was fight and/or opposition against Poland, and if you once took notice you could see that they actually had Cossack-like organization and romanticism to them (Sich riflemen, Zaporozhian military names, symbolic references) despite the fact that Western Ukraine never joined Khmelnytsky Uprising.
- Cossacks at the time (and before Uprising) heavily patronized and helped local educational centers, churches and etc. It became a major cornerstone later as it became one of reference points for ideas of autonomy and later independence.
- Cossacks at the time being enemies with Poland and Muscovy was awfully convenient to utilize in nationalism later

Lastly, the timeframes play a major role.
I think I don't need to tell you how important it was for Poland that it was defeated and erased from map not too far away from XIX century (with even short revival under Napoleon). The short time between Polish state being erased and the Polish nationalism (in XIX century sense) being born and blooming impacted heavily on Poland, it's desire to be independent, it's strength to muster strength to stand up for having own state and, in the end, ability to be able to fight for independence (many times and, finally, with a victory in 1920).
Similar overlooked thing mattered for Ukraine.
Cossack Host ruled Ukraine until 1763, until Little Russia Collegium finally disbanded it and annexed Ukraine administratively. Before that Cossacks ruled Ukraine with own subset of laws and were on rights of a vassal or march (but, effectively, it was gradually reduced until the middle of XVIII century until Russian Empire annexed Ukraine fully). On the Polish Right bank... well, you probably know about Koliyivshchyna (
koliszczyzna).
Thus in XIX century the memory about Cossacks was alive, with people who were alive who could even tell about those times (similar to WWII today). Even in Russian culture there are clear signs that people remembered about it and respected those ties, like in case with Gogol who wrote stories about those times and whose family had Cossack origins, with grandfather being of Hetmans.
That memory being alive at the right time allowed for Ukrainian nationalism to bloom, giving birth to it, and grow. Cossacks became one of refence points in statehood aspirations, nationalism, self-identification, symbols of fight and etc.
The Uprising became national-liberational retroactively, from the point of view of Ukrainian nationalism, and it is often poorly emphasized that it didn't intend to be that but it became it later post-factum. Just like other things we do may matter much later or be seen in different light.
Mainly because they were the stratums of society that worked with the magnates and state and considered as part of oppressors and foreigners.
Although it is important that later the Jews were also used as scapegoats as well.