I am not arguing in favor of an immigrant ban in any way, I think it's a bad idea, but when a headline is trying to argue against the ban the president has put forward and lists people from Canada and South Africa... well I mean yeah they're technically immigrants, but they wouldn't have been banned by the policy anyway. Now, Arash Ferdowsi, Iranian co-founder of Dropbox, that's your success story. Unfortunately the number of billion-dollar startups with founders born in countries listed in the travel ban is far smaller so it'd make for a worse headline.
I feel the inclusion of people like Camp and Musk hurts the point the story is trying to make. We have tons of important people from countries affected by the immigration ban, and it'd be worth it to highlight those people rather than just any immigrant. The president has never called for banning all immigration from any country regardless of anything. So the argument is disingenuous.