The difference between Elon and Swift, is the scale to which they are able to use capitalism for their means. I think Elon is scarier for that reason. (Not absolving Swift of that, though).
I would say the bigger scary thing is how they capitalize their fame to progress agenda, in addition to what you said.
One of Swift’s big appeal outside her media, is that she presents herself as a blank canvas for her fans to project themselves on. While I wish she used her platform for more positive advocation , it’s a lot better for her to be neutral than Musks’s aggressively negative use of his platform (especially in recent times).
Isn't the scale proportional though as Elon has 6 companies and Taylor has only 1?
Fascinatingly Taylor Swift has convinced her fans to rebuy re-recorded versions of all of her earlier albums. Not just one album either. So far it has been 4 of them with 6 in total. Her justification of this is purely capitalistic. This is kind of unprecedented, and the success of this for her has been quite spectacular.