I mean, the volume is absolutely an issue but it looks like they failed to configure DKIM/DMARC/SPF and this is a lazy policy end run around a gap in technical knowledge. I'm not surprised, but it is a bit amusing.
If you insist on running Meta's spyware on your devices you can also use a service like nextDNS to block trackers at the device DNS level: https://apple.nextdns.io
Interesting stuff. My grandmother has had seizures for decades following a head injury in a softball game. Her and my grandfather at one point rescued a Great Dane mix and over time he would begin to lean on her before a seizure would come on and would then stay by her until she came out of it.
I generally don't answer any number that's not in my contacts. If I don't know who it is they can leave a message or I'll look up the number and block it proactively.
I use Robokiller on iOS -- it screens the calls and answers spam with prerecorded scripts paced to match response times and then sends me the recording of the interaction.
Having lived in LA, you do get used to the noise but I don't miss it now that I've left. There were helicopters overhead constantly, neighbors shouting at all hours, cars and sirens. Now I hear animals and the occasional train passing by. It's been a really nice change.