The Taylor airplane meme has basically been played out and is no longer funny.
But for me the reason I found those memes funny is the same why I find it more interesting to take the piss out of Bill Gates rather than Musk. Everyone already knows Musk is a complete nut job. But there seem to be an alarming amount of people that think Gates is genuinely a good person because of his stupid charity.
From what I see Taylor Swift is just a business woman doing business, and she is very good at that. So most decisions she makes are because she assesses that they are good for her brand, and this includes political decisions/ standpoints. The airplane angle is one of the few things she can not control in this regard, and that is why I find/found it funny to stress that point.
USA! USA! USA!