I use some of them for growing a few seedling orchids, but that is only because I had some smaller net baskets. I think they are fine and should not damage your orchid roots unless you break the roots off when repotting. The plastic can be easily cut and should not be a big deal to remove unless the orchid is really overgrown in the basket. If that is the case, just leave the basket and set it inside a larger one.
Cheers,
BD