Why not just say that person A is doing this thing and person B is also doing the same thing and leave it at that without branding or trying to claim an exclusive brand?
I would so prefer that to the general bent of this forum for the last year.
The problems really start when person A is doing this thing and person B claims they are not only doing the same thing, but that it is really much better and more exclusive than what person A is doing. But they cannot clearly define what B is, because that is proprietary and really it is person A's fault for not going to the seminars where they can find out what B is. And why would person A question the lineage from whence person B is learning what they are doing? Really person B is just trying to help fix the broken deficiencies in what person A is doing. Person A should be thankful. And in the meantime, person B would totally kick person A's ass in a fight because what person B is doing is so much more effective. Though person A does have one point, that maybe what they are doing is more "spiritual," if you are into all that.