You seemed to change tack part way through, and I'm not sure what your point was in the end. Whether it was being upset about people minimising your partners diagnosis, or whether it was about feeling like the effects of your break up were being minimised by people with Criterion A trauma?
I think there are two different things that get attributed as 'faking it'.
There are those who are just completely fake, in that their story is made up and/or hugely exaggerated, people living in a fantasy world if you like. I don't think you see that here very often but when it does come up I think it's usually indicative of some fairly serious underlying mental health issues. The person clearly needs help and support from somewhere, but a PTSD forum isn't going to be the best place to get it.
They other notion of 'fake' is someone who claims to have PTSD, but from something that doesn't cause PTSD. Personally I don't view this as fake, but more misguided, or uneducated about the disorder, but it understandably causes frustration at times. I don't think it's about minimising that person's suffering, it's more often a statement of fact - you are unlikely to have PTSD from x event. It may be causing you suffering and distress, and you deserve help and support from that, but again, a PTSD forum for people suffering the effects of the type of trauma that cause PTSD is not going to necessarily be the best place to get that help.
This is a PTSD forum for sufferers (and their supporters) of criterion A trauma. It's not a general mental health forum. There are lots of those out there for people to get support from too if that fits their issues better.