BHB did have a problem with mites or a while but that really isn't a deal breaker as long as you quarantine your animals.
There are some things on SnakeBytes that I don't care for but I do also understand they are shooting for the "wow" factor and to attract people.
He really does have a strong passion for this hobby too.
There are lots of people that don't like him and I think many that don't have never had any personal experience and its just because their cousins uncles sisters brothers husband heard something he didn't like.
I personally wouldn't have and second thoughts about buying any animals from him if cash wasn't an issue.
Do keep in mind that his animals draw a premium because of who they are coming from too.