For me, the big question isn't what are the effects, but rather, what is the cause?
I see this as an effect of something else that other effects of could be mistaken as symptoms of this here.
Basically, the destruction of third spaces and public life in general has caused an increasing number of people to find relationships (both romantic and platonic) online because they no longer have the opportunity in their daily life. That, and the increased ease of long distance relationships and meeting people from far away means that people are probably more likely to have the opportunity to fall in love with somebody outside of their tiny corner of the world.
speaking from my own personal experience. options for dates were lackluster and I couldn't get what I wanted out of the relationships I had so, I looked elsewhere.
especially in small rural communities where the opportunities to expand your experience in mature relationships. most the dates I had were, "let's get wasted and fuck on this dirt road" or "let's get drunk around the bon fire with all our friends and go fuck in the woods". sound nice, but if it's the only option every weekend it gets old.
I wanted a personal connection to someone outside of getting drunk and having sex, others are fine with it.