The thing is, we all have our own opinion.. its also down to how strongly we feel about a subject and if its worth tackling.
I did feel the co-worker one was disablist, because i felt it was unfair to presume he was 'taking the piss' when it was likely his life as a Parent/Carer was clearly impacting on his job, but unless you have lived that life, you wouldn't understand.
I am borderline on the young peoples housing.. i think that one is probably more a prejudice against the stereotypical teenage troublemaker rather than any kind of disability or mental health problems.
I do think the child seating one is disablist, but my view there is clouded by my own DS's disability and the fact i have been on the end of parents requesting their children being moved away!
Other people will feel and think differently, so when even WE can't agree on whether a thread is covertly disablist or not, then we are never as a forum of hundreds of minds and opinions going to reach a consensus.
What I would like to see, is the ability for us to be able to say 'this might be disablist if you think about it from X point of view' without needing to call for deletions, shutting down discussions and bombastic arguments, but also that needs to cover having freedom to say it without being abused and screamed down with the SN Brigade catcalls from other posters.
If you don't feel you can educate on WHY a thread might be disablist then perhaps we ought to come here and ask someone else to do it, who does feel up to being able to put it down in simple, polite form.
Don't rise to the trolls, don't have a row just step away and ask someone else to take over... be it someone here or MNHQ.