Remco likely lost 2 stage wins due to descending last year.
He cannot repeat this
Two stage wins, and especially a chunkload of time. After Galibier, he is only a few seconds behind Vingegaard on the top, yet he can't catch Vingegaard until the descent has long ended and he himself has been caught by Ayuso etc. If he catches Vingegaard in the descent, they can work together on the flat, keep Ayuso's group behind and very likely catch Pogacar.
In the final TT, he lost most of the time to Pogacar on the downhill section, not on the climb. He also lost time on the short downhill in the first TT. There are even more examples i am now forgetting.
I find it very hard to judge a road by driving over it in a car. I guess they didn‘t think it was worth it.
If they are lazy, sure. I would expect a minimum of effort checking out key spots and especially finishes. I don't know whether at SQS they are physically impaired, but most people are able to park the car, get out, and walk for 500 meters to get a good idea of the road. It baffles me if they did not take the time to do that back in january or february when he couldn't train.