It's not the fake blood or the sadism that bothers me. It's that his entire movie experience is always so stilted. The dialogue reads like fan fiction of what he wishes the characters would say as filtered through 60's and 70's exploitation movies. Nobody talks, they have speeches that sorta relate to the scene with some swears and racial slurs thrown in.
Oh, and I saw those Kill Bill movies. If I didn't hate his work before, his speech (through Carradine) about Superman/Clark shows he's pretty much a damn fool.
Plus, remember all those years ago when he was all up in arms about EON doing Casino Royale. He stated that he came up with the idea to do the movie. As if Ian Fleming, the Fleming estate, EON Productions and Gildrose Publishing has not for years been trying to make it happen with all the legal stuff between Fleming, Broccoli , Gildrose and EON. Moron comes out and publicly talks about how he came up with the idea to film a more than 50 year old book and he feel cheated because they didn't pick him to direct. Jerk doesn't realize EON has never and will never have an American director on the Bond series, if they said no to the mighty Spielberg then Tarantino hasn't a shot.
As for Cameron. I can see where people think he's over rated. But most greats are considered over rated in at least some circles so I see it as a good thing. From a technical standpoint though, he can direct anything, he integrates cutting edge sfx more naturally than most directors use old school tried and true techniques. He's better with cutting edge stuff than most directors will ever be with another 20 years to practice and seeing the same techniques used millions of times over. Don't even get me started on his editing and cinematography, amazing. His writing is pretty good too, he uses the Joe Campbell "Hero's Journey" tropes to great effect, some call if familiar, I say gimmie something familiar in a new way (Avatar). Plus he wrote Rambo 2, one of the perfect action movies.