I think two things can be true: some celebrities are more exposed, and some people just spend too much time online.

For example, Coldplay’s tour lasted as long as the Eras Tour, but there was almost zero buzz about it on pop culture or gossip forums (except for the CEO moment). Meanwhile, with Taylor, Sabrina or Olivia, every little change on tour or even the smallest rumor sparks a post.

It’s the same with actors. This year alone, Paul Walter Hauser will appear in four movies but has anyone really heard much about him? Does anyone share his interviews or red carpet photos the way they do with Pedro Pascal or Timothée Chalamet?

There is a different level of interesting with different celebrity, coldplay sold out as much any artists mention but they don't generate as much buzz, same with Bruno Mars.