Stop with the 2018/2019 example, roglic was not the rider he has been since then in terms of performance.
"It is silly when you are comparing eras". No it's not, especially considering we are talking about 6-7 years ago, not 50. There are simply eras in which the competition is stronger. Consider the 100m example. The Bolt era was much stronger in terms of performance than what came after, and to win in that era was much more difficult. I just ask you one question and then let's stop this discussion. How many TDF would have froome won if he had to compete with pog, vingegaard and remco, and how many TDF would have roglic won if he had as biggest opponents bardet, quintana, uran, purito and valverde?