Optimism? Oh, I wish.

Maybe I'm just resigned to the fact that this is no longer Rogla of a few years ago. But he's still one of the best time trialists. All those youngsters that you mentioned, are great TTers. And probably they'll get better and better each year. But still I can't say that they surpassed Roglič. Remco is just in a league of his own at TT and Pogi and Jonas are the best climbers, so being third in MTT at TdF last year, was a great result for Roglič. Maybe you expect too much from him. Fact is that everyone else is so much better than few years ago, they are racing full gas from km 0, and we know that's not perfect for Primož. It never was.
In my opinion his numbers are still improving, but it's just not enough for today's way of racing.
About Giro last year, that's true, he was on antibiotics after. Maybe it would be better if he didn't go to TdF. Preparations were far from perfect and I also know a reason why he wasn't mentally 100% there. But that's not on me to tell everyone.
His coach said last year that they changed training, they work on endurance and as a result, he is less explosive imo.
Marc Lamberts: “Over the years we have worked hard together to build that [aerobic power] up bit by bit through endurance training. Year after year we kept an eye on that, and it kept increasing. His pace that he can maintain for half an hour and longer, had to be better. That worked out. What he used to do was follow, follow, follow. And if he was still there in the last five hundred meters, he would win. But racing is different. With the same profile as five years ago, he would no longer be riding in the top 5 in a Grand Tour." Lamberts assures however, being clear that constant evolution is necessary, specially at an age where the top riders in the sport continue to put on stronger and stronger performances.
https://cyclinguptodate.com/cycling...m-a-puncheur-to-a-five-time-grand-tour-winner
About Milano-Torino, I think that with better team support and not attacking the first time on Superga, he would be better. MSR was never his race, it's just too long and even in his prime he wasn't good there. I was actually positively surprised by how he raced this year.
And let's not forget, his biggest goal is in August. Still a plenty of time to prepare and maybe Rog and his coach are planning to reach one super peak only then.