My guess is that Kruijswijk went in as a back-up GC-option (lol). ....that Vingegaard was only third in line, mostly because he's not Dutch. Also unproven as a GT specialist, but Kruijswijk is obviously past it, while Vingegaard was flying. But that's J-V for you. Can't rule it out.
They supported Roglic with a sub-optimal team (and then I take Van Aert's lead-out as a given - even then).
I do feel bad for Roglic. He picked the wrong team, IMO.
There are very few teams out there as good as JV at building talents. They're like the Arsenal football team of the 2000's. Roglic, Van Aert, Foss, Vingegaard etc. They're very good with all the behind the scenes building, training & development.
As for 2022, Roglic will be there & he'll be at the same strength as this year. 32 years old for him won't be a problem & I'm sure they'll all learn some lessons from this Tour. As for Pogacar, he'll be massive favorite, but that brings its own problems.
Regarding the rest of the season I hope for a speedy recovery, I hope he has some fun in the Olympics (medal or no medal, it's the "Olympic experience" which matters) & I hope to see Roglic racing the Vuelta with some motivation. It'll be tough (it looks like both Bernal & Pogacar will be there), but with a young motivated team & the total backing for the GC, he could do something special on his own hunting grounds of sorts (because the Vuelta & Spanish stages suit the Roglic skillset perfectly).