[enraged_camel]

To me, "buy me coffee/beer" sounds like an invitation to meet up, which makes sense if you find someone's content interesting and engaging and think they might be fun to hang out with.

Sometimes people include payment links though, which is odd, I agree.

[microsoftedging]

I believe the original post is referring to services like https://buymeacoffee.com/ :)

[mixedmath]

This is true in my case! I've had more people actually buy me a coffee after interacting with my site than to click on my Buy Me a Coffee button.