I am not aware of any Librem AweSIM service outage since this thread. Librem AweSIM was unaffected by the AT&T data breaches and we have received no reports otherwise.
SIM swap protection is enabled for all AweSIM subscribers. A SIM lock feature is also available on the Librem 5.
The Librem 5 is a fully-functioning computer in the shape of a smartphone, so you can tinker with the device as much as you want. The WWAN and WLAN modules are socketed, so they can be completely removed or replaced if desired, without affecting other system functionality. You just won’t have access to those specific network interfaces without them.