There's definitely some truth to this. It's a bit harder to build trust with someone who is very far a way, and paying foreign workers can be more or less problematic depending on the size of company and the type of industry. For instance, in my current (US-government-adjacent) full-time job it's actually not legal for us to hire from foreign countries.
That said, I've done plenty of work with people from other countries. I find the difference in cultures to be very interesting. And I've worked with plenty of non-US citizens (from Russia, Brazil, India, and other English-speaking countries) who knew what they were doing, could communicate well and made good co-workers despite things like time zone differences and not being native English-speakers. In my experience the skill level isn't all that different, but it can be harder to pinpoint BS when the person speaks in an unfamiliar accent or isn't strong in English. For example, I might ask myself, is this person dodging the question I asked because they didn't understand it? Or because they're trying to BS me?
That said, I've done plenty of work with people from other countries. I find the difference in cultures to be very interesting. And I've worked with plenty of non-US citizens (from Russia, Brazil, India, and other English-speaking countries) who knew what they were doing, could communicate well and made good co-workers despite things like time zone differences and not being native English-speakers. In my experience the skill level isn't all that different, but it can be harder to pinpoint BS when the person speaks in an unfamiliar accent or isn't strong in English. For example, I might ask myself, is this person dodging the question I asked because they didn't understand it? Or because they're trying to BS me?