Of course Pogačar won't have any trouble winning the missing races if he chooses to. The only question is will he do that before Roglič and Vingegaard? The Vuelta is the toughest. I keep saying at 27 this year he isn't young any more and should target the Vuelta whilst it is still a gimme. And because the Vuelta is after the Tour it does not risk the Tour.
Itzulia and Romandie look easy for Pogačar when he wants them. He was easily beating Jonas at P-N in 2023. It was the Tour which was the problem, not now or at least before he begins to physically decline. Suisse should be ticked off by Pogačar this year as he is scheduled to race that for the first time.
As for the competition, I think I would eliminate Roglič now - whilst he has the least gaps to fill, he is past his best and is not going to win the TdF now. So that leaves Jonas. Jonas looks a strong favorite to win this years Giro. But the other week long stage races (P-N, Catalunya, Romandie and Suisse) I would only see him win if Pogi wasn't racing, and even then that is no guarantee against riders like SYates, Almeida and Ayuso - even Remco.