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If they'd disabled hotword, then the phantom physical touch would still happen, so literally nothing would've been solved.

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Sorry I wasn't clear enough making my point:

I'm surprised that the implementation of a (simple) physical button was done badly.

I'm surprised that the (surely more difficult) hotword detection works so well.

My guess is that location could have helped trigger the defect - assuming they're using a capacitive touch button, then moist environment of a bathroom isn't exactly helping (doesn't change that it's an implementation issue, though).

Capacitive buttons are also highly sensitive to noisy ground busses. A cheap power supply can make one go haywire.

Want to bet the developers all had good clean power while the production units got cheap Chinese bricks?

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