I find the "gratuitous negativity" a bit vague; i think thats poor wording choice, and something more descriptive should be developed. But I agree the principle is is good.
Its ok for people to be dumb, and for ideas or products to be shit. They exist / will keep coming. But if you want to actually contribute to the discussion, ask questions instead of belittling them. Try to steer them in the right direction instead of trying to get them to jump off the tracks entirely. Building stuff is hard, presenting things to your peers is nerve wrecking. Armchairs are comfy to speak from, but they don't move anything forward.
Its ok for people to be dumb, and for ideas or products to be shit. They exist / will keep coming. But if you want to actually contribute to the discussion, ask questions instead of belittling them. Try to steer them in the right direction instead of trying to get them to jump off the tracks entirely. Building stuff is hard, presenting things to your peers is nerve wrecking. Armchairs are comfy to speak from, but they don't move anything forward.