There's another angle to this. The fediverse is large, and its participants who are not Mastodon have different ideas and design philosophies. Some of them are publishing all sorts of lists and quotes and strike-through items. And when those posts show up on Mastodon, those visuals are lost.
That is not ideal, when it happens! But interoperability between systems with different goals and capabilities can't ever be full, it's a spectrum.