What people need to understand about "the apps" is that there are some major differences (at least at the start) between meeting someone off a dating app, and meeting someone in person. You have to set different expectations for when you meet someone off a dating app versus when you meet someone at a bar for example. Most of the complaints I hear about the apps is folks that don't realize the difference, and that you have to adjust your strategy.
If I had to take a (very uneducated) guess I'd say as a society we're currently experiencing an epidemic of unhappiness, especially amongst young people, and what the article describes is just one of many symptoms.
When religions like Islam, Judaism, and Christianity heavily control mixing between the genders, it's for a reason. Once the boundaries broke down and the so called "sexual revolution" took hold, it was only a matter of time.