I followed Greta Thunberg's birdsite do matodon bot for a while, then did the same for Cory Doctorow's.
I had to unfollow both, it was completely destroying my favourite thing about my mastodon tl:
it's manageable scale. I feel on top of the feed, I'm able to keep up with the people / things I care about and nothing more.
Birdsite feels like a shouting match now more than ever.
Generalistic and moderated instance.