The phrase doesn’t mean no one cares.....it means it’s pointless to care.
When I see perfectly clean rifles and optics, it’s a really good indicator someone doesn’t use it hardly at all. And people that care overly much about how they look rarely shoot much either (not necessarily the OP. Generally speaking).
Having a perfectly clean rig because you don’t shoot is not equivalent to wanting your optics to be new when you buy them new.