It’s interesting that you use this video to support your argument. You see, I watched that video earlier (how sad) and see a proper central midfielder there. Granted, he’s playing higher up the field in many of those clips; however, he’s clearly very rounded. I actually think he’s quite languid, arguably erring on the side of cumbersome, for what the groupthink usually consider a #10 to be.
I was then sad enough to watch another video, but from a year or so ago. His position was markedly deeper and he looks like a proper central midfielder: solid passer, committed in the challenge, quick thinker and clearly a goal threat. I see shades of Herrera at his best. Herrera, too, was an all rounder - albeit nowhere near as efficient in front of goal.
I would have absolutely no issue with this lad playing in central midfield. He looks every bit an old school, ‘I’ll do a bit of everything’ central midfielder, as unfashionable as they are these days.