The people complaining about lack of animations are the same idiots who'd complain and whine about the time it'd take for the next update
Some of them are yes (Especially those who don't actually support on Patreon), but some (like myself) also wonder instead why old, already completed animations are taken out of the game (or disabled). It's one thing to say, "New succubus won't have animations because it causes a delay." Followed by animations being added in some time later.
Then there's another thing when old, completed animations get removed from the game. The animations are still in the game files when you import an old save, but they're not enabled when you play the game from scratch. So when someone new comes to the community, the only way they'd be able to see old animations for CH 1+2 would be to find an old save file with the animations enabled or view them on external websites. This really just seems like a bug. I'm sure it'll get sorted in time.
Because after reading above that the gallery mode doesn't change with a new save file,
I'd actually recommend people play with an imported save rather than start the game from scratch so you're able to get the full story as well as ch 1+2 animations enabled until there's a patch in the future that re-enables them.