ok, this is probably a stupid question but I'm going to ask it anyway... Are cartridges with light primer strikes dangerous? What I mean is, is it a ticking time bomb with a possibility of it suddenly going off or does the primer need another good solid strike for that to happen?

IME with semi auto rifles and light primer strikes:

Any situation which allows the free floating firing pin to dent the primer is a situation, which repeated a few more times, is a slamfire waiting to happen.

My Garand, SKS  and Mini dent primers on chambering.

A dented round, sitting around?  Nothing is going to occur.  Rechamber it several more times in the weapon that's been denting it, and who knows if or when the slamfire will happen.

But maybe this question is about pistol ammo?  To me, bullet setback upon chambering is a bigger concern.  Especially when the loaded cartridge is subjected to repeated chamberings.  The pressure the cartridge generates begins to rise dramatically upon setback.   Want to fire proof loads in your 9mm?  Take a factory round and tap/press the bullet .100 deeper into the case.  The NRA reported that in 9mm in particular, this can make pressure double.

Let's be safe, out there.  I only reload my SKS w/ hard primers to defeat the slamfire phenomenon.  Which I've experienced a few times.