I explained the whole tech thing to my old dad who has an iPhone and an iPad and such. I didn't tell him he should shift to non-american tech, I just reminded him that while he wants to boycott American products in the stores, he must be aware that the places where a boycott matters is also the places where a boycott is the most difficult. Getting our governments to stop investing in American weapons and American an tech. Us stopping investing in American tech in private and stop using American websites and software. X, Y and Z are American websites, software or tech.
I told him I would be looking into getting myself a European phone next time and I tried to explain what Linux was - despite not being anywhere close to knowledgeable about it myself lol.
I think it gave him something to think about, but I don't expect him to change immediately. But I know that he might reach out to me if he needs a new device at some point.
I think that is the best method, honestly. Just plant the seeds in their heads, let them think about it over time, give them the information your can and be available if/when they reach out ๐ค