Then let's pretend/agree that IP exists- just for the purpose of this discussion- and dig into "why".
Is it practical? How does it help me fight bad guys? And for the record- that is all I care about.
Does it help you fight bad guys? Absolutely.
Is it practical? I suppose that depends on your point of view - from my point of view no martial art, MMA, BJJ, or whatever is really practical for fighting bad guys because the return on investment is so bad in relation to the years of work that you put it in - that is, for most people fighting bad guys just doesn't come up that often.
On the other hand, I enjoy it for its own sake, and there are a whole host of health benefits (many unique to internal training, if you follow that stuff).