I've followed that thread but not felt I had anything to add.
I do sometimes tell moms when I see red flags in their post for special needs, and I sometimes suggest that they post a question here because we have so many awesome moms who know about things like sensory issues and social issues and all that.
For some moms, even posting a question about their child on the SN board is something they just aren't ready to do. They just aren't there yet. Even if I tell them that my kid has autism and she's a GREAT kid doing really well and that its OK -- life on the other side of a diagnosis can still be very OK.
In that thread, I've really wondered about the expectations of the preschool and if they are at all reasonable, and if perhaps, the issues would go away in a play based preschool. My kids go to a K-12 school and the youngest students are 4 1/2. They don't expect as much out of them in K at our school as that school does for preschool.
But for your own peace of mind, you might examine why you are getting so emotional about the thread, if there is some unfinished business in your own life, something you need to let go of that is more immediate to your reality. May be your strong feelings are being triggered by the thread, but the thread isn't the REAL problem. It's just giving you an opportunity to resolve something in your own life.