Uwe Boll has never made an entertaining film. They don't even get into the "So Bad it's Good" territory.
Seltzer & Friedberg pretty much single-handedly destroyed the spoof film as a genre with their equally horrible attempts at parody. Mel Brooks or Zucker-Abrahams-Zucker, they ain't.
Tom Six... well, The Human Centipede... uh... yeah. It was a thing, I guess. Definite proof that just because a concept is novel, it doesn't mean it's something worth developing. Just total schlock designed purely for shock value.
The rest of the directors on the list have at least one or more genuinely entertaining films to their name, and even some of their other films, while not great, are better ways to spend two hours than a lot of other movies. Shyamalan had a rough patch, but The Sixth Sense and Unbreakable were great, and even Split and Glass were decent. Emmerich had Stargate and ID4, both of which were very fun films. Depending on your taste in horror films, some of Eli Roth's work is arguably passable. Michael Bay has made some fun movies, namely Bad Boys and The Rock, and even some his lesser films can be an enjoyable distraction if you shut off your brain and treat it for what it is. Paul Anderson directed Mortal Kombat, which was another fun film, and some of his other movies aren't awful. And Zack Snyder's filmography is pretty decent overall; he made a decent remake of Dawn of the Dead, as well as 300 and Watchmen, and I even found his contributions to the DCEU to be entertaining.