"Is it weird to happily take turns listening to your friends about the things you each personally enjoy, regardless of whether those interests are shared?"

In general, no. For example I love listening to my sweetie talk about cars and my roommate talk about photography, two topics I don't have much interest in for myself but I love hearing about from them because they really enjoy them.

But there's a difference, I think, between not being interested in a topic and finding that topic fraught. I would have a harder time listening to someone talk about an interest that I personally found fraught than about something I only find interesting by proxy. *contemplates an example* I find baseball mildly interesting so I like listening to baseball fans talk about it. I find American football frightening, unnecessarily dangerous, at the center of some toxic cultural aspects, and generally fraught, and so I wouldn't really want to listen to a friend raving about it.