I'm always doubtful about Guardiola teams these days. He seems to want to be the centre of attention and when a player starts to take the headlines, somehow, I get the impression he tries to defuse them in favour of a collective approach. That said, there's no doubt that Haaland, De Bruyne and Foden have been exceptional as individuals at times.
However, for example, I look at the Haaland in Germany who was full of attitude and a monstrous figure charging with the ball, is now all but a goal poacher. Foden was a title-charging wizard and then fizzled out to seeming like a lost kid (reviving form now). Then there's the defence that gets shifted around and the side now have no outstanding centre back, with Ruben Dias falling off form.
To some extent, I think Wenger followed a similar path, where in his latter years seemed reluctant to allow his players to outshine him.