And I don't see those full anime episodes uploaded on youtube for about three years being taken down, which is pretty handicapped.
they're only taken down if the company wants it down
or some amount of other people flag it as the company's content (which is what happened with a couple of MLP episodes. you can tell because it said "third-party reports" of the content, rather than from the company itself)
so since nobody's really butthurt about the anime videos you're talking about, and the company is indifferent, they stay up