Plastic is not very reactive. This property makes it generally not directly harmful to organic health, but also notoriously slow to decompose, causing huge amounts of pollution. I think it's misleading to compare it to asbestos.

Sample bias. The unhealthy and depressed people were less likely to be out being active and having fun.

barely usable results

Using chatgpt and copilot has been a huge productivity boost for me, so your comment surprised me. Perhaps its usefulness varies across fields. May I ask what kind of tasks you have tried chatgpt for, where it's been unhelpful?