What do you mean by Mastadon is a bloated sloppy mess?
It was my understanding that Mastadon has _far less_ javascript than Twitter, not more.
The UI for mastadon always seemed far cleaner, more performant, and importantly - capable of actually loading, compared to twitter
Essentially, anytime something is shared from twitter I simply ignore it, because it may take a good 40 minutes to figure out the workaround to view it, compared to Mastadon which 'just works'.