I think it's pretty clear at this point that most non-techies place no value on digital privacy. So, from the perspective of someone whose friends all use Zuck'

I think it's pretty clear at this point that most non-techies place no value on digital privacy. So, from the perspective of someone whose friends all use Zuck's app, the other person is trying to complicate their life for no benefit. Within their value system, they're not being ignorant. Rather, they're perfectly rational.