I think he didn't have the best preparation for this Vuelta exactly because of the Worlds TT which was before the Vuelta and requires a much different preparation than a Grand Tour.
As for next year, to be honest, I don't expect Remco to have a perfect preparation for the Tour either, I expect him to have a kind of 'hybrid'preparation like Pogačar usually does because next year I expect him to ride three monuments, likely MSR, LBL and GDL, both Olympic races and both World Championships races. This will more than likely not be enough for him to fight for theTour win but could still challenge for the podium while having an incredible year in one-day races which, at least to me, is a better option than him just getting super lean for the Tour, to likely not win, and not achieving big one-day race wins.
In 2025, with a lower opportunity cost (no Olympics), I expect Remco to get more a more perfect preparation for the Tour in order to challenge Pogačar and Vingegård.