Yeah I'm sure Roglic could have dropped Pogacar at will.The part where they lost time. That for sure was not the initial plan. But the final TT was the plan all along. They more or less confirmed that in some post race interviews. Hence being a "protected" rider by JV could be perceived as exploitation of the hospitality. From being a human point of view. From Tour point of view obviously you can't blame them. They did the right thing by exploiting the weakens that Roglič forgot to stomp upon. It's life. You learn as you go. Hence i wouldn't hold that against Roglič.
P.S. As for the claim Roglič cracked mentally at Il Lombardia. The thought from the article above. I don't buy that for a second. That is a rather superficial take on it and more importantly a wrong one.