I was specifically talking about means to coordinate, not means to engage.
I agree with all you said regarding the digital and physical realms.
However unless you spend your days preaching to every passerby (and the vast majority of them would think you are some kind of lunatic), it’s very effective to digitally handshake with strangers online, in order to arrange a physical meetup.
And you can always continue to do that offline, too, by going to general conferences/meetups…
I see your point. I unfortunately still use FB because all the small business owners around me use it to communicate. But that started because I attend the monthly meetups with them.