I think there are 2 different things here, yeah the therapist seems to have an informal setup and maybe not be the most 'professional' but could still be a great therapist. However for me the only bit that would put me off is the signs that he is not a great therapist, which is what sounds like an inability to separate off his own stuff, demonstrate genuine congruence and empathy as opposed to superficial sympathy, and not keep bringing things back to himself.