Hikaru's win in the Grand Prix was great, but the Candidates is far different. For example, Alireza Firouzja - another member of the upcoming Candidates cycle - has been MIA for a while, likely due to the insane amount of time he is putting into Candidates prep.

Since Hikaru has far fewer recent classical matches than the other upcoming Candidates participants (with the exception of current world #2 Ding Liren, who still needs to finish 30 games before May), he'll have an edge when it comes to preparation. However, unless he prepares like a madman, he'll be at most a wildcard candidate, perhaps beating a favorite or two but unlikely to win it all.

I'll personally be rooting for Ding and Fabi. I like Hikaru as well, but I unfortunately just don't see him beating Magnus in a World Chess Championship.