An interesting thing I have observed is that despite all the fuss about "quote posts" (and if they should be natively supported or not), is that it's a thing I do frequently†. Yet, I have not had a single complaint so far.
† I am working around the lack of support by linking to the posts I want to quote, adding a screenshot and adding to that all the contents via alt text. I use #MastoPoet to simplify things https://github.com/raikasdev/mastopoet
[See my last couple of posts, where I quote post myself]