Likely a right-winger who thinks immigration - even immigration of people who are talented in developing the most important technology of our time - is really bad. So they "couldn't resist" offering more immigration opportunities to people.
Look at his post history. He recently complained that LLMs are too "woke".
So yeah, 100% a racist right winger who didn't have anything of value to say, and decided to just throw shade at immigrants when he saw the opportunity.
Good news is that these guys will open their mouths at work and get themselves canned, so we usually only have to worry about them online.
A perfectly non-racist statement in a world where context isn't important. A very racist statement in a world where everyone knows that you're saying that foreigners are dangerous.