Hijack you thread for a related suggestion.

Maybe also allow the last post can be deleted (if without reply at the bottom). Only the last post.

So if I make a post like:
-post #1 by ali
-post #2 by ah meng
-post #3 by ali

I can delete only post #3 if I am ali.

Another suggestion is to indicate how many times a post has been modified.

Like "Edited by ali for 5 times".

Or, from phpBB old version:

"Last edited by FlierMate on 31 Dec 2021, 07:39; edited 17 times in total"