Agreed, but not a “charge overnight for years” but no degradation at all.

Impossible for battery health to be at 100% after years. May still be working great, but not 100%.

There is one app that runs the model on an iPhone. It’s called “draw things: ai generation“. But you aren’t wrong about AI image generation usually needing a gaming pc or at least a video card with a lot of video ram to hold the model in while it works.