I just looked for BLOODIEST in the database, and didn't find it either as a clue word or as an entry. If you're suggesting that the database shows you whether a word is permitted or not, then BLOODIEST is not permitted! But I wouldn't make that assumption; maybe it just hasn't been used yet.
Personally, I kind of shrank back from all of those words. Maybe that's because, when clustered together as they were, they seem more objectionable to me than when taken separately (too many horrible associations there).
FWIW there are a number of words in the database which I wouldn't use, but maybe I'm more delicate than the current NY Times editor. For example, I'd never use ANAL in a puzzle - unless it was clued as an abbreviation for "analysis," which is what some constructors have done. I see that it has been clued with "___-retentive" in the NYT, which I don't think I'd ever use.
PS I agree that the database is useful, but I think it's most helpful to people creating more than just a few crosswords. YMMV.