Thats my thoughts on this too. If someone wants to keep a spider as a pet fine. If its not spinning or wobbling to bad. If it is it needs to be put down. I do not think they should be bred. Its a way to get the genetic disorder or whatever people want to call it. Into other animals. Next thing we know it will be in all ball pythons.
A spider bred to a pastel. The bees can and do get it passed on to them. So ok I wont buy one. Ok I pick up a normal get it home it does it. Then I find out its a normal sib from a spider clutch. Ok all the spiders normal sibs most either get sent out the the local pet shops. Or maybe held back for breeding. Like in the spiders, The normal sibs ones that don't spin or wobble can produce babies that do. If it can be passed onto bees or anything else with spider in it. It could also be put onto the normal sibs too.
So that normal spider sib is bred to whatever say a pied.Then that genetic disorder just got passed onto the piebald gene. In the end we will end up with the rarest of the balls being ones that don't spin or wobble.