> I don't know a single person who used Eclipse after 2020.
What happened in 2020? Did I miss the end of the world?
In my bubble, Eclipse : IDEA is about 50:50, and luckily it doesn't matter because of Maven. I am one of those Eclipse users, and I am still waiting for someone to show me a feature that IDEA has and Eclipse doesn't. From my perspective it seems like the same thing, with different aesthetics (e.g. whether you can open multiple projects in the same window, or you need different windows) and keyboard shortcuts (which can be redefined on either side).
So I wouldn't try to convert people to Eclipse, but I also see no reason to convert to IDEA. I have a tool that works and does everything I need, and that makes me happy. Show me a functionality I am missing, and I may change my mind (some people already tried, and then it turned out that Eclipse had that, too); otherwise I am not interested in novelty for novelty's sake.
Uhm, I am not developing for Android. There, I imagine the situation may be quite different.