

The $5 Windows keys have never been legitimate - either they’re just people selling keys they’ve generated with a keygen or bought with a stolen credit card, or it’s students reselling free keys they’ve got from Dreamspark or a sysadmin selling keys from their employer’s enterprise licence, which, in Microsoft’s eyes, are all piracy. An OEM copy of Windows 11 Pro is about €150 and can’t be transferred to a different motherboard, and a retail copy which can be transferred is about €300. A one-time purchase copy of Office is about €120 (it’s also available as a subscription). These machines either have at least €270 of software on them, or €0 worth of pirated software on them.
I imagine getting a notification on their phone reminding them if they’ve not brushed their teeth by a set time might help forgetful people to remember to brush their teeth, and if it’s via Home Assistant, which is self-hosted, entirely local, and open-source, there’s no downside other than having to set it up in the first place.