To add, #Fediverse devs should agree and make a stand not to implement any mainline Mastodon-only "feature" related to quote post.
If mainline Mastodon instances and users complain about it, they can just rely on "fediblock" and use this reason: "refused to implement Mastodon-only quote post feature". Sure it will fragment the Fediverse network, but why not? People and the media keeps calling it the "Mastodon network" anyway.
Users who prefer the Fediverse network over the mainline Mastodon network can migrate over to friendlier and sane instances. 😉