Bit ignorant to be honest.
C:S2 is a rewrite. It's not as such a sequel but a completely new game. Everything has changed, so it's not a "refresh of graphics".
And because of that, old C:S1 stuff isn't included, other than some ideas from it. It was never said to be a sequel other than in the name and it was always said to be a completely new game.
And behind C:S1? No, not really. Only in the sense that DLC hasn't launched (apart from Beach Properties). Content wise, people don't remember how barebones C:S1 was within first years and especially after launch. This game has a lot more content in it than even today the basegame of C:S1 has. But it is easier to forget or ignore it than actually admit being wrong. For example trams aren't in the basegame of C:S1, overground subway's weren't added until years later, ...
And speaking of DLC, looks like the content is dropping soon. There has been a lot of activity on all DLCs, CCPs and radio stations. Even the Bridges & Ports seems to be coming soon. I bet this is the reason why content creators were flown to Finland this week.