I would think the 21st century is much more relevant than the 80s and 90s. The landscape is also way different, and the monuments are much lower variance than they have been in the past 30 years. Sanremo especially is no longer a race where classics riders are the underdog, which is gonna make combos with Ronde, Roubaix and even Liege much easier. The RvV route is much harder and favorable to a good Liege rider as well to the extent that a TdF winner and overwhelming Liege favorite actually beat MvdP there.
Pogacar has such a huge influence. One can say that MVDP probably wins RVV without him, but maybe he doesn't win MSR without him (and it's won by more of a sprinter type).