A “self-solving problem” could be described as a “self-correcting issue,” “inherently resolving problem,” “naturally resolving situation,” or “auto-remediating issue,” depending on the context, as it implies a problem that has a built-in mechanism to fix itself without external intervention.

I’d only concern yourself with where he’s getting his idea of “manly”. I never questioned my macho, and I’m quite feminine in ways. Maybe it’s just adolescent insecurity?