My daughter's birth family is Mexican-American, so I definitely know of what you speak. Yes, it's true that Mexican-descended people often proudly retain their Mexican identity long after their citizenship has changed.
Regarding the statement:
This remark can have a lot of potential meanings and implications, some of which I agree with and others I do not. I'm not eager to enter a discussion about it.
What I will say is that the main difference between MIA and MIM Fender is not in the quality of the workmanship; rather, it concerns wood quality (MIA Fenders are made from the higher-grade blanks and MIM Fenders are made from slightly lesser-grade blanks); price, obviously; there are differences in specs, colors, etc. In other words, it is a bit tricky to compare MIA and MIM Fenders directly because of the many variables at work. For most folks, it comes down to budget. On the other hand, the Roadworn and Classic Series instruments (MIM) are so excellent that they genuinely give the MIAs a run for their money.
I have also played a number of MIM basses and guitars that I thought were pretty lackluster. So it's hard to generalize. Each instrument should be judged on its individual merits when possible.
I don't subscribe to the concept of tone wood so as long as it's durable, not too heavy and either has a nice grain or is a solid colour I'm happy. But maybe the MIMs need better pickups, but that could simply be brand segmentation by design.