Not only this, as much as I love him due to him being family, I don't love his views.
First off, I want to tell you that this is OK, even if it's hard. I know plenty of people who hold similar views to your grandpa. Some of them I love very much even though I strongly disagree with their politics.
I have family members who are MAGA. Some of their views are completely shameful and deserving of harsh criticism. Yet, sometimes those same people can be incredibly generous and do very good things for others.
People are complicated.
If your grandpa were honest with himself, he would be willing to admit that if he lived in a place where his family was dirt poor and in serious danger, he would probably do whatever it took to care for them, even if it meant illegally entering a country.
Immigration laws don't mean shit when you don't know where your next meal is coming from or if the cartel is going to murder your wife and kids tomorrow.
If he were really honest with himself, he would have to admit that he's not all that different from some poor brown guy from Central America who has many the same problems that he does.
Edit: Thought grandpa but wrote dad. Fixed that
I'm going to wager this is mostly an attempt to get more people into the Apple ecosystem. The more integrated the user is, the harder it is for them to get out.