I’m getting annoyed with people that ask a question, have the community answer their question and troubleshoot over several days, only to delete their post and the solution.
The person asking the question is often providing the least amount of effort, so why should they have exclusive right to delete the contributions of others?
Possible fix: have a per-community option to only request deletion.
Lemmy doesn’t have that? That does sound like something they should change then.
Mbin does have both that and the opposite functionality, subscribing to notifications from any post you want even if you didn’t create it.