Actually telling someone they're drinking whisk[e]y wrong is pretty obtuse. Besides which, adding a splash of water, and doing so using an ice cube, is a perfectly acceptable way to imbibe. You don't have to load it up, nor do you have to drink it right away...come on.
Everyone has a different taste, and every whisk[e]y can react different.
And it's even more obtuse to say you don't add ice to liquors at all. Ice is not uncommonly an integral component primarily due to the dilution factor. People think "dilution" or even making it cold is a bad thing with liquor, when in fact it's not. Ask a real bartender sometime (and not one that is just working a high volume club, but rather a careerist bartender/mixologist). As long as you're not going to get red-faced and argue, it's a great conversation-starter with your local bartender.
About the stones, I find they're more trouble than they're worth. I have some from a far more over-priced source, but don't find them to be awfully brilliant about chilling something. Clearly, YMMV. If I just want slightly chilled, I'll chill the glass or add ice just long enough to chill it, then remove.