In an sms world:
Problem: I need to contact a new acquaintance.
Solution: Exchange phone numbers because everyone has them. Text. Or call.
In a post-sms world:
Problem: I need to contact a new acquaintance.
Solution? Talk about messaging apps. Find the intersection of the ones you both use. Rank by favorite if it's not an empty set, then decide on the relative merits of choosing one in the middle of both your lists, otherwise attempt evangelism. Following evangelism, regress to "Yeah, admittedly the UI has some quirks -- here's how you do <thing you want to do>."
Unfortunately, tech bro progress-at-all-costs featurejerking very often leaves a very large number of people out of the party. The elderly. The impoverished. etc. Despite the corporate mantra of all features all the time, we can actually elect to take old things and make them better instead of inventing the new hot thing all the time.