I was about to say what GoblinChild said 
I know of one relative person in this world who performance parents for a fact.
Generally I don't judge or even notice how other parents are speaking to their children, unless they are shouting nastily or swearing.
Once though we were at a farm in the UK and were looking at some rabbits and other small creatures when a father came into the same hut as us with his DD who looked a very similar age to our DD - about 14 months. Our DD couldn't walk, or talk. The other girl could walk and was babbling, too. The dad spent the whole time making references to this - not directly to us, but through his daughter. Like 'careful Poppy, don't go barging into that little girl you're much steadier on your feet and you will knock her down' the girl was about three meters away and not moving. And 'no, Poppy, walk around that little girl, she wont move out of your way because she can't walk. No Poppy, not even if you say excuse me'. Poppy was constantly babbling 'dadadadada' as small children do and wasn't even trying to go past DD. 'Look Poppy! Rabbits! You can say rabbits can't you? Rabbit! Say rabbit! Raaaa bit! Poppy say rabbit, Poppy say rabbit' Poppy started crying because she had been watching sime guinea pigs and her dad dragged her away. Amidst her howls, dad said 'yes darling! Rabbit! Well done'
The whole monologue was very loud and aimed directly at me. He had to leave because the child was crying and his parting shot was to me 'well we'd better move on. Some kids are so curious that they just always need to be on the move and doing something new. She needs constant stimulation, this one!'
It was utterly bizarre. I am sure Poppy was a bright, active, clever little girl - but you could see that just by watching her take an interest in the animals etc. I didn't need a public broadcast. The guy barely took his eyes off me the whole time. I kept wondering if I was expected to comment or something.
I think this is the kind of thing that people mean, rather than just peole speaking nicely and clearly to their child.