Comment by lxgr

> SIM farms are normal, common things that exist all over the place to allow messages from far-away senders to be sent as if they came from a local number.

Meanwhile, many US companies won't let me, the actual legitimate user they're trying to authenticate, use Google Voice, because it's "so dangerous and spoofable, unlike real SIM cards".

Hopefully this helps a little bit in driving that point home.