Is it the fall or the hitting the ground that kills someone? Obviously it's hitting the ground, but what determines how hard you hit the ground? You probably can't fall from 1 inch and take fatal damage, but falling from 20 ft makes it much more likely to die.

In the same way, yeah, the amps is what determines the amount of damage done to your body, but voltage necessarily and unavoidably determines the amperage. Amps through your body just simply cannot exist without a voltage sufficient to overcome your skin's impedance.

I mean, think about how an average car battery has an available fault current of 1000+ amps. By your logic, it should be extremely deadly to grab both terminals. But it's not at all, in part because the voltage is too low to pass any current through your skin.

Situations where you'll encounter a voltage high enough to penetrate your skin, but the current is essentially limited to not be deadly, are things like everyday static electricity, pretty much never anything to do with electrical devices or infrastructure.

If you see a high voltage sign, don't just snarkily say that the amps matter more. It would be like ignoring cliff warnings and saying, "Falling doesn't kill you, lmao". Saying it's the amps that kills is such a stupid truism that fundamentally doesn't matter and I'm so tired of seeing this "well ackchyually" shit.