Most scientists don't have a professional profile on Twitter or Bluesky. It's the most self-aggrandizing ones who tend to do that.

The rest of us are just writing papers, presenting at conferences, collaborating with other research groups without any interest in putting it all out there on social media.

This whole X versus Bluesky thing is basically irrelevant. Neither of these platforms are good venues for dissemination of scientific research.

"Neither of these platforms are good venues for dissemination of scientific research."

These "platforms", i.e. other peoples' gigantic websites, are fantasy worlds that cater to self-aggrandisement where relevance requires a presence in that world

The outside world, aka the real world, is under represented and thus ignored