BAT is available for tip if you use Brave browser. I don't think you can tip BAT on other browsers.
Ah, true that. Have been using Brave for so long I almost forgot it's automatically embedded.
I don't think the issue is you are a popular figure or not. Everyone has to begin from zero follower but if you can make informative and helpful tweets, you will get followers who will in turn tip you.
As a content creator on Twitter, you must have knowledge, and creative idea for infographics, animations
Sadly I ain't a content creator, rather a GA hunter :p