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I don’t see how this is exclusive to the apps. Plenty of people who shoot their shot irl are pump and dump as well.
Yes, most people are awkward and weird and too busy to go out to physically meet people these days.
I actually think it's a lot easier to meet people in person. I don't like checking some site or app continuously and sending messages. >

Apps have the problem of making people think someone wanting to sleep with you is the same as genuine interest and it inflates egos. In real life you have to deal with rejection on a more personal level so more goes into trying to make yourself appealing.