Actually, I've heard Ben say that Levy *could* be a GM if he wanted to be, but that it would make no sense for him. He would have to quit streaming, spend his days studying, and travel a lot, and for what? To lose a lucrative source of income for a title that hundreds of people who make very little money have? I think Hikaru's comments about Levy have been much more cutting.
As for Ben's sense of humor, you only have to watch his stream three times. After that, he just recycles the same jokes, makes tortured puns that aren't funny, and makes humor reference that nobody not receiving a social security check could possibly get. I do admit, however, that watching the amount of food he can consume in a single stream can be a source of amusement for some.
Maybe Ben said that initially... I'm not sure. But lately he certainly doesn't think so and has been very blunt in saying it. He has straight out said that Levy has absolutely ZERO chance to become a GM, because GMs need to be good at chess and levy is a terrible chess player. He's also said that Levy's "road to grandmaster" is insulting, because it suggests that any old idiot can get the title, which demeans Finegold's accomplishment.
His comments about him playing (and his inactivity) are at 21:54.