There are tons of things that can start failing on hardware. I don't realistically expect some LLM usage to materially reduce the lifespan of the laptop, but running it 24/7 for AI usage makes me think that I'm more likely to get 3 years out of the device instead of 10.

This is the FUD I’m talking about. B200 GPUs will easily have economically useful lifespans assuming proper cooling and power delivery.