The thing is, the team essentially put Kuss in this position. Attacking him internally or failing to support him, barring a total collapse, would be pretty disgraceful. Vingegaard and Roglic may not like it, but they have certainly reaped the benefits of being on Jumbo, including having the best mountain dom at their service.A lot of people thought that was a mistake. And a GT is not comparable to GW.
That said, I have shifted opinion slightly from a few days ago where I was very downcast at the prospect of him winning. As long as Vingegaard and (especially) Roglic don't have to go in total defense mode, I think it very much would be a deserved win. He looked great on the Tourmalet. The next few days will be really interesting, I think.
