I feel they've overcomplicated it with all the themed stuff on the top row. And also, in fact moreso, I hate what they did with Creations - so often I get a notification that Photos has made a collage or an animation or whatever, but if I don't follow the notification right away, I find it really hard to find them in the app later. Used to be much simpler.
Also (and they may have changed this admittedly, I haven't checked) at the time of those changes, they borked the video editor by making all outputs in portrait mode, even if shot in landscape. So you ended up with huge black spaces at the top and bottom instead of a frame filling 16:9 output.
Those all sound like fair complaints! Pretty glad I don't use it much, haha. My main purpose for it is sharing photos of my kids with my parents a few states away.