Alcaraz may seem a size too big for other tennis players at the moment. And to think that we haven't even started the gravel tournament in Europe yet. So that will soon be even more in favor of Alcaraz, I suspect. It is also possible that we will only see Nadal for a few more games. I think he just wants to play tennis at the highest level. Sinner is also a huge talent, but the question is whether he can seriously compete with the real world top. He seems to be just below that at the moment. Especially if you compare him with Djokovic and Alcaraz, for example.
Alcaraz is performing well right now and playng on clay might ahelp him even more. Tennis analysts are concerned about Nadal's future, and while Sinner great player he may not yet be on par with Djokovic and Alcaraz.