A lot of scientists and journalists have not moved to other platforms. I tried to use instagram instead but the algorithmic injection of content and a terrible UI make it unusable for me.

I find using Twitter in the "following" mode, as opposed to the default "for you", I get a lot of value content and almost no noise.

If you are a content creator on Twitch or YouTube you pretty are being held hostage on Twitter due to critical mass. Migrating would require a mass protest of large content creators to choose a new platform and move over all at once.

It's his personal blog, and he allows the plebs to post comments.

exactly!

reading xitter today is worse than daytime television.

contributing to it's content pool is just counter intuitive.