Yep I read about that when I first looked into exwm and it is a problem. I’m lucky though, I only really use emacs and firefox so it’s not a big deal for me. I wouldn’t want to be using exwm if I was doing some serious multitasking and using video editing software or something. I don’t know if there are plans for a multithread rewrite of emacs but I hope it happens.
I’m going to set up lem.el at some point! I currently use elfeed to see lemmy posts from the communities I’m most interested in and firefox to comment or just browse about. I actually saw this post from inside elfeed originally.