You don't just join Julie's lives and be made mod. The mods know what they are getting themselves into as they would of been involved for a while.
I do agree they might feel stuck once in and realise how toxic, negative and draining she is but they're adults, she isn't going to do anything she says, she never does so she definitely isn't one to be scared of. Yes she will make lies up on her lives about you but let her most people know she's lying and watch because it's a shit show everyday. It's car crash TV, you know you shouldn't watch but you can't help but look.