Alright.
I agree it's a weakness of his, but it's minor. Could compare him to Busquets. Would I want him to have better pace? Of course, but the perfect player doesn't exist.
de Ligt together with Umtiti/Lenglet is a great combination in my book.
Most of those you mentioned are just above average fast or not good enough overall.
And as I said that doesn't make a difference for a CB, you're either VERY fast or you'll have to compensate for your lack of pace with good positioning.
I don't think we'll get much further.
In conclusion: IDGAF how slow a CB is if he's great at every other aspect, people shouldn't be concerned about pace, this isn't FIFA.
Pace doesn’t seem to bother all the Raki supporters