38 trillion microbes in a trenchcoat of flesh

You won't regret having 2 cigarettes and a can of monster.

Using your fabric efficiently? Makes total sense. No objection to that.

But specifically designing patterns such that every single part of a length of fabric is consumed by it? You're setting people up to fail. For one, you can really only do this with patterns made mostly of rectangles and right triangles, which can only make a very narrow range of garments that simply do not play nice with many people's bodies (especially bodies with lots of curvature). For another, a zero-waste pattern is also a zero-error-tolerance pattern. One wrong cut or measurement and the whole thing's toast. The wiggle-room that a more standard pattern allows also allows you to fix problems when they occur.

If you make a zero-waste garment and never wear it because it looks bad on you? That's not actually zero-waste. If you start a zero-waste garment and can't complete it because you made one little mistake? That's not actually zero-waste.

But more importantly, the whole idea of 'zero-waste' as a desireable outcome is antithetical to the methods and traditions of sewing. It's a form of functionless, guilt-driven, aesthetics-first minimalism that has no place in actual sewing practice. The scraps of fabric left over from cutting a pattern are incredibly useful. Larger pieces can become parts of new projects. Smaller pieces can become patchwork. Even really tiny scraps can become stuffing or batting or kindling or any number of other things. Home sewing has always been about not wasting things, but the way to not waste things is not by piously making only garments that suck, it's by repurposing, reusing, and recycling everything you buy. Once that fabric reaches your house, 98% of its environmental impact has already happened.