Ohhh, we haven't had one of these threads in ages.... They always end well. 
The OP is quite clearly about ostentatious, needlessly loud, attention-seeking parents. If I recall correctly, the thread starts with a load of people coming on to say, quite rightly, YANBU.
And then a load more people come on to spectacularly miss the point and say how horrible you're being about people who - gasp - talk to their children.
No, it's not about talking to your children, which every fucker does, but talking 'for show'. And of course special needs are excluded - surely that stands to reason.
Anyway - good luck, OP.
The people who want to miss the point you're making will continue to miss it, no matter how much you try to explain yourself! They're clearly the shouty types you're referring to and don't like being rumbled.
And once again, for the hard of hearing at the back - this isn't about talking to and engaging with your children, it's about banging on at the top of your voice in an obviously attention seeking way.