The internet is a low-trust environment. Any scammer can reach you from anywhere in the world and try to take advantage of that desire for serendipity. You mention Omegle specifically, which was a hunting ground for sexual predators: https://en.wikipedia.org/wiki/Omegle#Child_sexual_abuse

It's the things that don't scale and instead have high barriers to entry that are most likely to produce actual healthy human connection.