Not related with the quoted post _per se_, but I find it really ironic that Mastodon's Twitter account used QTs. I thought they considered them toxic and that's why they refused to implement them themselves.
@cnx
> Seriously though, quote-posting is bad because it’s technically top-posting.
Very interesting point, but I think it could be argued that, while it is true that top-posting in email is bad because you're putting your response before the text you're replying to (thus making the whole thing harder to understand), in the case of QT/QP, you're not responding to anything, but initiating a new conversation based on someone else's content. In other words, the quoted post acts like a footnote, adding context to one's own post.
Seen this way, it makes perfect sense to put it below one's own text instead of above.