I fundamentally disagree with this, though it is true that the skillsets aren't complementary and they are unlikely to ever have the chemistry of MSN or even BBC, I think all 3 have enough breadth of skill to adapt. But it is clear that they need clearly defined roles and instructions, they are not figuring it out on their own
The same goes for pressing too. Vini and Bellingham are willing pressers and Mbappé is gonna have to be. It might still be imperfect, but a manager good at coaching a high level pressing scheme should be able to implement it with them