It really comes down to the idea of people wanting a better place.
Do you want an inclusive, diverse and safe space or do you just want to replicate the experience of other social media platforms with the social groups you are comfortable with?
If you want a better place, you're going to have to fight for it. It's not going to just happen because you have a few Black and/or trans friends in your follow list.
You have to show up for the ideals you profess. Consistently. Again and again.