[ziddoap]

Public-relation spin like that is almost as despicable as the original terms themselves.

The quoted clause, as you stated, was absolutely perfectly clear! There was no vagueness or room for confusion. They covered every possible way that they now have full control over the authors works.

The next draft will probably just have more legalese, and be spread out over multiple clauses of their already long (~7500 word) terms of service so that it's harder to point at it and say "gross".