I would have agreed with you before last years Vuelta a España, but he visibly grew up before our eyes during that race to win it.
I don't think he's the finished article, and I don't think he's as good as Tadej Pogačar was before his crash, but based on the today's result, where he finished top of the contenders, I think he's pretty determined to win the Giro and it's up to the others to try and beat him.