I think Alacaraz is arrogant as well. In fact I'd say most tennis players have a hint of arrogance. I don't think they'd get far off they weren't.
I do believe that Carlos is the new player that will be around for years. Federer, Nadal and now Nokjovic are just getting older and they will probably slip into commentary boxes soon.
As an aside, has anyone watched the John McEnroe documentary? Brilliant. I always liked him, even though my county playing parents thought him shocking!
Life did seem to be a lot more fun in tune 70s and 80s