well maybe reposting people with swastika verification badges or people saying they’d support Joe Biden if he’d openly call for trans suicide is still something to lose!
What you’re saying is the equivalent of “since the police ain’t around no more I can just commit crime”, just because the people that annoyed you and told you to stop now blocked you and left you alone, in my opinion, still means you should think about your actions. Sure, it is just words or posts on the internet, it doesn’t matter that much, I think, I just don’t think of you as a person that just does whatever they want even if no one criticizes them. I think you have a strong moral compass! Like, you wouldn’t just start eating meat simply because no one was watching, or you wouldn’t repost an anti-feminist meme even if there was no one left to challenge you!
And yeah, most likely going “mainstream” will be hard or near impossible with what people think or say about you, but considering people like Keemstar are now respected among even the radical trans community for just a few tweets I think anything is possible.
Even if it is the case that many large instances defederate with the “gleasonverse” so to speak, the Fediverse is like at 8.2 million users. If it will get anywhere near as big as Twitter some day, 8.2m is a tiny and meaningless fraction.
So, I wouldn’t be as pessimistic as you are!