That's not true. You could also lose your ultra-demanding job, move back to the small town you grew up in, only to accidentally fall into the water and get pulled out by the rough but handsome former highschool classmate who never left.
But then again, there were no other apps either so you had to print out the maps, chats, ... and automatically walked around with a huge stack of important papers.
In other words: we need dating apps because of all the other apps.
You could also go around absentmindedly eating directly from a jar of peanut butter in the hopes of crashing into someone doing the same with a large unwrapped chocolate bar.
Those relationships usually started out rocky and accusatory, but both parties inevitably realized that they worked great together.