There are plenty of jobs where people get access to high value assets without being high-wage though. It's too simple to reduce it to mere wages.
No, it absolutely is not. That is explicit race-based discrimination carried out by the government. Companies can, and do, decide not to give certain privileges to remote offices. It is not comparable to businesses refusing to staff certain positions or give certain responsibilities to remote offices. Furthermore, companies can require certain positions to be filled by US citizens (common practice in defense and aerospace companies).
It is also racist to assert that Muslims are all of a single race. Like most religions there are followers of all ethnicities in all countries.
Which government did that then?
That doesn’t mean that Chinese are inherently more risky. It’s just far more likely than an employee in China is a risk for certain types of corruption than an employee in Munich or Brazil. A warehouse manager in New Jersey might be accepting bribes, but for a different reason and different impact.