matchboxbananasynergy
I can't think of any additional details which I could provide and I don't have a disposable GitHub account which I'm willing to link with this identity.
The following contains as many details as I can muster:
My phone is a Pixel 7. P7 is on TQ3A.230901.001.2023100300.
Early today, I became aware that a FEMA alert would occur and that GOS would allow me to disable it. I checked the settings in Owner and found that these alerts were permitted. I turned the alerts off and returned to User profile that I user as my "daily driver" profile.
About an hour after turning these settings off, other people's phones in my vicinity began to chime with this FEMA alert. Perhaps five minutes after I heard other people's phones being alerted, I checked P7 and found that the FEMA alert was on P7's screen.
During this alert P7 did not make any noise, perhaps unsurprisingly as it's always on vibrate. During this alert P7 was in my pocket and I did not feel it vibrate, although it might have and I simply didn't notice.
I did not screenshot the alert and I don't remember exactly what it said but it was certainly the FEMA emergency alert.