Yes to 3, 4, and 5, especially.

3 - Large numbers of "followers" really means very little. Like Facebook "friends". How many of my 700+ actually ever see or read my work?

4 - Very noticeable and makes me want to stop making comments. :-)

5 - A lot. People treating this as a place for extended Facebook/Xwitter posts. Some surely unedited AI, but also (benefit of doubt — since opening market internationally) English as a Second Language?

Been here for 7 years and the way $ gets distributed has shifted numerous times. (Remember the Referral program?)
Hope the overlords adjust things to make creative writers want to stay and disuade the content-churning side-hustlers and random "followers".