I'm just not a fan of the theory of it. I understand plants are different than animals, but it's just so unnatural. Nowhere in nature does a son copulate with his mother. Or grandson with his grandma, etc. It's just kind of weird and I can't imagine it's good for the gene pool.
But I'm willing to check it out to see how it works with plants. In my very limited experience of bx'es, they have all been weak compared to regular sex plants on average. I get that in the plant world, the point of the bx is to lock in certain traits, but in my very limited opinion, I think there are better ways and bx-ing might be a sort of short cut for that end.