It's not Rome 2, this clue is clearly saying that. Feel free to quote me on this if I'm wrong.
It would be like saying, there will be no Matriarchal Engagements, would make it clear it wasn't CK3, a mechanic exclusive to that game series not being in the game, is confirmation it's not that game.
The idea of it being a Rome 2 but not called Rome 2, so everything about Rome but not, makes no sense, why would they abandon their brand.
Probably because EU:Rome has a bit of a mixed reception and Mechanics could be revamped massively so that basically no connection to the old Rome games exists.