There are literally published studies that show Twitter has tweaked the algorithm to promote the most vile and extremist right wing media while at the same time cooling the spread of moderate voices.
Anyone still hanging out at the bar run by Nazis and full of Nazis and funding Nazis is either deluded in thinking that they can change the vibe of the party, or they just plain like the vibe.
Mastodon is more like a garden than a grocery store. If you spend the time to slowly build your network by following interesting people and hashtags, Mastodon can be an amazing experience where you actually have real human interactions.
It’s not good for viral marketing or mass produced content in my opinion, but if you start by following a few people that boost a lot of other posts, then you’ll find content in time. Every time you see an interesting post, follow that person. If it later turns out that it’s not for you you can unfollow it and it’s not a big deal.