I apologise, you actually wrote

‘I read the post and comments by the post creator and I'm personally offended that people are so mentally ill they fake being sick, it's an insult to all of us that suffer and people like this both destroy doctors trust in patients with invisible illnesses as well as putting those sick at risk of not being believed. I find it heartbreaking and I do not have compassion or feel sorry for those that fake illness for attention or any type of "gain". ‘

Better? Sorry someone’s mental illness personally offends you and that you lack compassion due to the fact you’re unable to see past your own feelings on the matter.