I don't think we can say "martial arts is about _____" and try to apply it to everyone who does MA and then label them as we see fit. I think we can only say "martial arts is about _____" for ourselves individually, because it is a question of purpose. For me, martial arts is about fighting... but to impose that on a meditating Tai Chier is just plain ridiculous because its my purpose, not his.
It's like saying "swimming is all about rescuing people who are drowning." That's obvious bullshit, just ask Michael Phelps.
So with that perspective in mind, my definition of bullshido is anyone who claims to be doing MA with a certain purpose, and then not actually training like it, or doing something else with it. If a Tai Chier says they are learning it for holistic meditiation I say ok that's cool have fun with that. If a Tai Chier says they are learning it as a comprehensive form of self defense and how they are going to be the next ultimate grand eternal fighter of the world without resistance training or cross training, then I'd raise the bullshido flags.