I think a lot of social network problems would be solved if platforms put an orange flag next to profiles that have posted more than 10 times in the last 24 hours, and a red flag next to profiles that have posted more than 60 times in the last 7 days. The total number of flags ever given to an account on the bio would be good as well. No other automatic action, just a visible flag or other symbol.

Being able to temporarily filter out profiles that post too many times (a setting you could change) would also be nice, but it shouldn't be automatic.