Okay, as stated, I wasn't trying to defend anyones' claims here
For myself I find the distinctions largely unhelpful. I practice taiji that is based on the principles of the Yang tree. Whether it comes from this branch or that branch or another branch is irrelevant. It is still Yang.
What Dr Yang, Jwing Ming is teaching is not what Yang, Banhou wrote about exactly, because he has flavoured it with, among other things, his knowledge of White Crane. Thus creating yet another branch of Yang taiji
That's how I see it, but I don't lose any sleep over it because it is of no real importance.
Good articles though!
peace,
Monsoon