Don't see how anyone could come to that conclusion. Roglič, for example, had idea prep this year. Vingegaard no, but at least uninterrupted since the Tour.
Evenepoel never had the Vuelta in his plans until COVID, and the Worlds TT was the goal. That was his peak. He did his best to re-ramp for the Vuelta and peak again. While I think not horrible prep, certainly not optimal. Much worse than his prep last year for the Vuelta or this year for the Giro. That's all anyone is saying.
I agree it was good prep, but the Giro-Vuelta has been much, much harder for riders to nail than it should be on paper. So given he raced and won the Giro, I'm not sure you can call it "ideal" prep. He and Kuss did extremely well in both, but that is the exception, not the norm.
That sounds more about you than him. He collapsed on the Aubisque, then animated the race almost every day afterwards, making the most he could of the race. Great rider to watch. If you think a guy like that avoids "confrontations" (I'd call it competition) with the best, well I'll wonder a bit if you've had little or no competitive athletics in your background.
I think it's possible both to think he is exciting and enhanced the Vuelta tremendously and to acknowledge that he avoided direct, competition, with GC competitors post collapse. I think he is exciting and extremely talented, but I'm also disappointed that he took the easy path of stage hunting rather than testing himself. Wasn't this supposed to be a progression toward Tour success? Based on the Vuelta and previous comments about step-stoning him to the Tour, I'd send him back to the Giro in 2024 if I were Lefevre.
So where did I try to find excuses? I said (and that's the easiest 'fact) that you're comparing apples to oranges.
If you want a fair comparison, the real question is: (1) how would 2023 prepped Remco have done in the 2021 Vuelta?
Because neither an underprepared Remco, nor a well-prepared Roglic, won the 2023 Vuelta. So if you want to argue Remco failed this year, and you want to use Roglic 2021 winning with bad prep in your argument, you actually undercut your own argument as Roglic 2023 who was well prepared, didn't dominate / win this Vuelta either.
(2) Realistically, a well-prepared Remco could have reached the podium this year, but not the top step. Same as Roglic. An underprepped 2021 Roglic winning vs. Mas / Haig shows Roglic can win a Vuelta against weak competition, something that Remco bashers keep repeating after he won in 2022. So don't use 2021 Roglic winning the Vuelta for anything. It doesn't make 2023 Roglic look any better, nor does it make looking Remco any worse.
(1) This is hypothetical and subjective rather than a comparison of actual situations and results. Both end in speculation, but you're moving the conversation a step further into the theoretical, not into the actual.
(2) This is unbelievably disingenuous. You grant Remco a spot on the podium if his prep was better, which, ok, hard to see based on what I saw, but OK based on his win in last year's Vuelta. But then you deny that Roglic would likely have finished first or second - and no worse than second - if not for the strange team tactics situation. Remco dropping actually hurt Roglic quite a bit.