Sorry, I'm having a rant.
We got DS aged 2.7 diagnosis of autism the other day. I went straight to my parents house where my sister proceeded to be really horrid.
"You just have to tell them, you know" and "Oh he plays with his toys for too long. I make sure that my children don't do that, I take them away if they do".
As if I could have prevented DS's autism by interrupting him collecting or lining things up. And it's an absolute LIE anyway, I've never seen my sister pay the slightest bit of attention to her DC beyond dressing them up for Christmas or Halloween.
All that day she went on with her "you just have to tell them". However, her DS's school rang to say that she had to come and pick him up because he had shat himself twice and had no dry clothes.
I'm not a nasty person. If I was I may have said to her that she just has to tell him not to do it.
But honestly - she still has not a clue what autism is. MOST people upon hearing that a child has a condition which explains why they don't respond to the usual parenting tools accept that they have been wrong and in our case going a bit quiet and feeling guilty, but there's my ignorant sister sounding off about our parenting!