Might be time to let it go? Time will tell us if Valverde's comment translates to results. It was, after all, the opinion of one pro - which other current experienced pros have made a similar comment? Opinions are fallible by definition.Only when it comes to quantitative production within the logic of profit. They say nothing about the ineffables, which only muses and vates can qualify.
But I think it's safe to say Remco won't be the next Merckx. He can't sprint - ironically Remco is a worse sprinter than Valverde was. Pogacar is a better finisher and for that reason will likely end up with more wins even if Remco is so good he wins 10 grand tours.