I concede Dele does not have awesome explosive pace over a short distance. He does not have the build for it. But he is not cumbersome slow either. Also he will still be running fast after the fast twitchers have blown their gaskets. He has found a way to make room with trickery.
If he was slow it would be a weakness but he isn't and the position he plays doesn't depend on it.
It's scraping the barrel to use a lack of pace as a weakness.
As for his passing, many times commentators praise him for quick passing and through balls with perfect weight. Some are underhit, some are overhit but that's common even at top level. He at least tries it and has licence to because the coaches know he can do it. If it goes wrong, invariably we have plenty to defend it as its in the opponents half. He is a flair player and will try things others either can't do or are scared to.