Comment by mcv

It doesn't have to be "disgusting on the part of the US telcos" to route Chinese SIMs through the Chinese Firewall if the other side of that agreement is that non-Chinese SIMs in China get to bypass that firewall.

Because ultimately, that means more ways to bypass that firewall. Chinese people in the US could but a US SIM to avoid the firewall. They could even take it home.

But routing Chinese SIMs through the firewall is only acceptable if the reverse is also true: letting non-Chinese SIMs in China bypass it. Otherwise it's just more censorship.