Well there is a reason why GC team leaders don't usually do leadout duty days on end. You say it won't be the reason, but if he were only to be down by seconds to Roglic not minutes at the end, the work he has done may very well have made an impact. Just sayin.
I think you are right, it‘s just not common any more.
Ullrich in Yellow did some leadout jobs for Zabel in the 1990ies, and others certainly also.
There is a good story about Pappy Horner, who, riding his first few times in Europe, just couldn‘t believe the GC leaders in Europe don‘t have to help with leadout, chasing breakaways, riding tempo, and so on.
I think in times of marginal gains, Remco probably still wastes too much energy. He‘s young, has fun riding bike races, wants to impress, and so on. So, why not? Sooner or later, he probably will stop these leadouts, these too many hopeless attacks, etc.; in the moment, however, he‘s entertaining. I enjoy watching him, and never complain about him, because he always seems to give 100%…
