I think you all need to look at this in the context of which it was said. All footballers are technical, when someone is of far higher technical qualities than their peers, their technically is going to be noted & commented on.
No one is saying someone like Lakuku is rubbish technically, but you will find that a characteristic that west African players commonly are superior in to White/Asian counterparts, is athleticism. I have actually seen much more articles on Ibrahimovic's, Ronaldo's & David Luiz' athleticism than I ever have of any black player, so I think Gary Linekar has a point when he says you don't see it because you aren't looking for it.
The guy's reply on twitter however was pretty racist, saying when are white players described as 'small, slow and weak'. I think this shows, like usual, the people crying about racism tend to be the racists themselves. That guy clearly has an underlying complex.
If it's so offensive that black players are commented in a positive light on their athleticism, then maybe the people who get offended shouldn't play sports. Advantageous traits in sports are always going to be commented on, Black boxers are continuously noted for their speed, it isn't racist, it's just impressive how fast some West Africans are. The fact is their are differences between populations in terms of physical ability, more black players are going to be faster than more white players, so more black players are going to be commented on this aspect of their game than white players. It isn't racism, it's a fact of life.
The most recent athletes I have seen commented on on having footballing intelligence, was an article on Kante & an article on Evra, who are both black.
I get their is a problem with racism in parts of the world, but it get's to a point where it just gets silly. There are stupid things you see, like comparisons of black players for no other reason than they are black (i.e. comparisons to Heskey, like mentioned earlier), I agree with this completely and always raise my eyebrows when I see it.
At the same time, guess what, look at the 100m, 200m, 400m 1500m etc etc. Black people dominate sports with a few exceptions, & if you play close attention, Black people utterly dominate sports that don't cost any money to play. If black populations tend to produce more athletic humans than other populations, it's likely that more black players are going to be noted for being athletic.