Jerry’s BJJ school is definitely still around. It has grown considerably since I interviewed him, in fact. Aside from his, there are a few other BJJ training options in the city now, also (one at B-Active gym in Tongzilin which is no-gi and another nearby at a gym called Up). As for Krav Maga I haven’t heard anything, I’d be a little more surprised if that is around, but it’d be cool to see some info shared on that if anyone has it.
Muay thai: there is an S1 gym, but it is super far away, outside the city to the northwest. It is a great training facility, though. I believe there is a post about it here on the forum with more info.