[Reason077]

Less sensitivity (or rather, being able to have a higher threshold for sounding the alarm) is actually a good feature for general domestic applications.

You don't really want the thing going off every time someone burns a bit of toast or it just becomes an annoyance, and therefore at risk or being removed or disabled.

[anfractuosity]

Yeah that's true, I guess personally though I'd rather put up with some false positive alarms from toast etc.