On the contrary, some of my last modified date updated object got a creation date change to Nov 21, 2023 as well - definitely the date for v.0.36.0’s release. Around +5528 objects had a last modified date change and +1489 objects had a creation date change. Both minuses around 30 objects actually created/modified on 21st.
P.S. Didn’t try pre-release this time. 
P.S.2. So you can use calendar view to get Anytype to count the number of objects for you