One evil thing does not justify another; if B is doing wrong by being dishonest, it doesn't mean you are entitled to the same by using fake degrees, for example. They and you would be the same kind of low-lives in that case.

Eastern Europeans, BTW, are usually much better educated than those native speakers using fake degrees. However, they should not claim to be native speakers if they are not. Dodgy school owners usually ask them to tell their students such lies.

"And when they say they're American they usually mean they've been there. All the world and his mother seem to claim to be American; in fact I've met white Eastern Europeans telling their students they're from USA."