More or less that could be said, I think Harry didn't like Dan Williams either or just a little bit more, because when I watched Fotu's tape I saw more or less a bigger stronger Dan Williams, don't know if that is what Harry saw, but Williams was an out of date NT in the early 2010-16 where everyone searched for the next Ngata and the rest moved on to more mobile NT and less static closers.
And yes, NE worked exactly with that, they used the unmovable Shelton to anchor the center of the DL and let the ILB/S fill in the gap with a run stoper. Often even so to let you gain 2-3 yards per play in full knowledge that the opponent would take this short yardages in hope they could get 4-5 out of it but often even way less. Worked for NE, if we intend to do something similar in the future with Hicks and Weaver being exactly that type of ILB that can work great in that system, this pick would make really sense.
But like Harry said, Fotu, could be also a really moveable NT, but he didn't tap into that yet. On tape it seems he has everything you hope for in a modern NT but the guy doesn't put it together in the game.
@Harry, is that also something you see, and probably dislike on him?