NE tips getting out of hand

What's up with these girls sitting down for 30 seconds and then demanding a 10 dollar tip? I feel like at the bare minimum, these girls should first have to declare before they sit down, that they require a 10 dollar tip to sit down. I'm not trying to be rude, but it's not even the pretty ones that are acting this delusional? I'd rather just have another coffee or smoothie at that point.

started with Millie, now you got Ruby, and Yulia?

First, it's rude to take a five then say "actually it's 10" when you didn't specify before you sat down? Anyways I'm on boycott against the 10 dollar tippers man. TS ridiculous. If you value yourself don't let them sit down with you either, or else everyone gonna think this is alright to do. Too many girls to be wasting your time on these baristas.