I use it because I follow a lot of Japanese artists and mangakas. It’s nice because ya know Twitter is English so getting around is pretty easy. Stuff like pixiv seemed intimidating because it’s made for a Japanese audience, even if they have English stuff. Plus I just know how to use Twitter after making my account in 2009.
I’ve had the z fold 3, 4, 5 and pixel fold, right there with you. I mostly hear the complaints about people thinking folding phones are dumb from sites where people are more likely to have serious opinions on what phone you should buy, like here and reddit. To be honest everytime someone sees my phone for the first time they’re super interested in it and could see themselves buying one; the real issue is the price. As soon as I mention that it’s probably 3x the price of their current phone, that’s the end of that lol. Hopefully they can get the price down to regular slab phones. Once they do I think they’ll start to seriously compete because I think this form factor is incredible.