This will grate on some old-school Mastians, but the Fediverse (mostly Mastodon) is still lacking a certain sharing energy. And the blame for that is the decision to not support quoted posts. It was made years ago, based on what was then mostly an anything goes version of Twitter. Small improvements in moderation changed much of that. And moderation is supposed to be the stock-in-trade here.

#QuotedPostsOnMastodon

@shoq why isn't re-tooting sufficient for sharing? I feel like a quote feature only facilitates misplaced ego; that the sharing person can only share if they are able to add their own take, as opposed to just increasing the reach of someone else.
@RyanJSuto But the point isn't about either of those things. It is to refer, recommend or annotate a thing so someone notices the post, idea, or alternative view of the thing in the first place? Often, posts are something no would notice or care about without a clever or overly composed "reply" that has to convey both the poster's point AND the unseen context, or the source post will never even be seen. It's a tedious, uncreative & ineffective means of sharing content.
#QuotedPostsOnMastodon
@shoq if you're expressing a new idea, then why not just toot something anew? I don't know, I haven't run into the issue you're describing.