Re: Recoil springs and limp wristing.
A lighter recoil spring is not going to make it unsafe unless the lockup is super sloppy. Also, a recoil spring isn't really designed to slow the slide down that much as it moves rearward, so it's not going to increase the wear and tear on the pistol in any significant way--that comes more from choice of ammo than anything else.
I do think that a lighter spring makes the gun LESS reliable though. A spring stores energy. A lighter spring will store less energy to help it feed.
A heavier spring will decrease reliability IF the spring is already so heavy that the slide doesn't cycle all the way, but my experience with tiny, blowback guns with very light slides suggests that even a brutally heavy recoil spring will allow the slide to cycle all the way, and it's therefore unlikely that a recoil spring, unless grossly extreme, could be heavy enough to cause short-stroking.
There are other consequences from springs that are too heavy though, with respect to timing and felt recoil.
I'd probably clean the gun and install a new, factory-weight recoil spring, and consider hotter ammo.