This isn't about using rice cookers or not, that's a personal choice for how you cook your food, and choosing to do so or not really only affects the person cooking and cleaning. A rice cooker probably uses a similar amount of energy as cooking it by hand, possibly even less.
But when people using LLMs are causing active harm, and are making it more difficult to collaborate on a team, it's a lot harder to accept that it's just a personal preference.
If you wanted to use the rice cooker analogy, imagine if rice cookers let you cook rice in just one minute. Faster, don't have to wait for the rice to be done, great! But in order to do so, you have to cook 50 pounts of rice, but throw out the majority of it, and use a thousand kilowatt hours of energy to do so. You'd better believe I'm going to be skeptical of everyone deciding that they suddenly have to use these 1-minute rice cookers that burn so much energy and generate so much waste.