It's been like 25 years since the security world basically moved on from assuming that users could be trusted to act securely. We gotta design processes and protocols that keep things secure even with people who have bad habits.
I can secure my email, but every email I send or receive touches at least one other mailbox I don't control, of some other user. Same with text messages, social media posts, etc. The digital world we use has a billion overlapping people, some with escalated privileges as employees or admins or mods or whatever. We can't make them perfect, so we should design systems that work well even with imperfect people.
I think it'd actually be pretty easy. Just ask:
Most people will say yes on their Apple/Samsung/Google devices.