Let me put a phrase into your mind: nonconsensual virality. It's why quote-posts on Twitter led to harassment. People's words stolen, taken out of context, used purely to incite a mob of griefers. The answer is to give #Mastodon users control over whether someone else can quote-post them, with a simple "quote or not" setting that can be set before or after the post goes up. We should be allowed to stop people from taking our posts viral without our consent.
TikTok already allows users to prevent others from turning their posts into a duet, which is roughly the same thing. If TikTok can do it, surely Mastodon can.

@annaleen Mastodon *can't* because of the nature of the decentralisation:

Not everyone runs Mastodon, and not everyone runs unpatched Mastodon.

Which is why getting a resolution on this that most people are ok with is fairly urgent. The longer it takes, the more likely people just decides to provide the worst possible totally unconstrained variant.