Bro, I don’t know where you get all these strange ideas from.
First of all, Vietnam do have a muslim population (the Cham), they have been living in Vietnam before there was such a thing as your “PRC”.
Secondly, right now there is no problem between muslims and non-muslims in Vietnam. So I don’t know what you are trying to say, that Vietnam is somehow lucky thanks to Thailand and China “blocking” muslims from Vietnam.
There are also a muslim Cham population in Cambodia. Watch this youtube video interview with an old Cham muslim in Cambodia. What you are talking about, the attempt to “secularize” muslims, the muslim name/language policy your govt is putting on the Uighur, the “crackdown”, is similar to how this old Cham muslim described how the Pol Pot Khmer Rouge treated the muslim back in that period. Listen carefully from 3.53 minute:
Also listen carefully when the Cham man decribed how the Vietnamese army arrived in Cambodia and “saved” the muslims and allowed them to practice their religion again. I think your govt should learn from the Vietnamese on how to treat the muslims.
(but I suspect your govt propaganda have been telling Chinese people how Vietnamese army was bad in “invading” Cambodia and your Khmer Rouge ally, and that the PRC was the hero. I hope this short interview of a real persecuted Cambodian Cham let you see the truth from propaganda)