I do see what you're saying. You can account for all of these factors and it still turns out that, largely, individual LLM use just doesn't use that much power compared to most things people do day to day. Inference is so cheap that even dozens of requests don't amount to much. I could look up and give you a bunch of numbers, but I don't think that's likely to convince anyone who doesn't do the research themselves. It's so easy to come up with sources that say what you want. I'd encourage you to actually look into this yourself.
Training costs are higher, but you train once and use repeatedly. Right now, total training costs are stupidly high, but that's because we've got an arms race between the frontier labs to spend as much money and compute as they can for truly marginal gains in quality. The solution to that problem isn't for individuals to stop using AI, it's to stop those assholes from wasting so much power.
Individual LLM use is so cheap, that it really isn't worth wasting people's energies thinking about limiting that. Instead of being distracted by attempts to make this an issue of personal responsibility, we should be focusing on what will actually make a difference. We should be focused on supporting policies that lead to systemic change. A carbon tax would change corporate behavior right quick, and not just for AI companies.