Lippy lynz was always a dig at her disability to be honest. It started with Pearl,Tam, Irish kelly,Snel,Serena and Claire all started calling her it on live referring to her "droopy lip" and Kelly said she would "fix her lip" and "swing her jaw straight" so to be fair lippy lynz did originate as a name due to her disability, hence why Tam is going to court (for that and the R slur) but Angie doesn't really give a do and is milking it to the max on Lynz behalf for content.
Edit: Also Claire claimed Lynz didn't have MD because her cousin has it and it doesn't just cause a droopy lip..... The stupidity in the live that day was astonishing