Supposedly this year was his last Tour. I also suspect 2016 was his one and only Giro.Valverde still has the endurance and positioning skills to be there at the end of the 250 km+ races. He hasn't been as explosive on the short, steep climbs, which might be permanent decline or might be unideal training. Either way, he can still win big races and this Worlds performance changes nothing. In fact, his Worlds performance was much like his 2019 MSR and RvV performances.
I just hope he doesn't waste 3 weeks next year riding the Tour.