The problem with future proofing is that you can never predict what new feature will end up becoming the next big thing or the next bottleneck. Sure, if everything works out exactly as predicted, if what the companies said was going to be the next big thing, really did end up being the next big thing, then you'd be future proof for up to 10 years. But then what if it turns out that the next big thing wasn't what anyone predicted it was going to be? Think about the whole VRAM issue that came up last year. Almost overnight, supposedly high end GPU's got instantly re-evaluated to be not worth the money. DLSS, too - the newest version only supports the newest generation. And mesh shaders - even some GPU's from a couple years back don't support it. Out of all the things that people predicted was going to be the next big feature, how many actually ended up being the next big feature? You end up just as worse off as if you had just went for a lower-tier option.

I'm not advocating for replacing your GPU frequently. Far from it. But the argument of splurging on an excessively overkill tech part for futureproofing is just marketing mumbo jumbo