Yes yes yes all the way!!!
Have to agree rugby and cricket and golf and martial arts moms aren't so bad, but footie moms and dance moms? A bit of a pain... and also 'drama school child' moms are a pain. Problem is, they all think their child is the best, and is perfect.
But also 'ice hockey' moms are awful. There's an ice rink near me, and a few people I know have their kids in the local team, and the moms are a PAIN.
One is a particular horror, and screams and shouts at other children if they upset her precious son. She insists he is 'man of the match' every other time there is a match,' she begs money off family and friends for trips to Canada for him, (for 'training,') and she is at every match screaming and hollaring across the ice rink. She is vile.
She has even alienated half her extended family, by yelling at her own cousins children (a number of other boys in the family are into ice hockey too!) Seems no-one in the family has a mind of their own, and they're all into the same flucking sport.
And I agree that the it's the parents who failed dismally at what they wanted to do in life, who are they're trying to push their children into being a 'success' at something.
I mean, there's nothing wrong with wanting your children to do well, and encouraging them etc, but not to the extent where you are pushing them into something they probably would not have been arsed with if you hadn't pushed them (and I have seen this happen!)
In the 'ice hockey family' I know, the one woman I was referring to who is vile (and who has alienated half her extended family,) has just one son, and her 3 cousins have sons into the ice hockey too.
One cousin has 4 boys, and every one was shoved onto the ice rink aged 2-3 I shit you not. As time passed, another cousin who has 2 boys followed suit, and shoved her boys on the ice rink at 2-3 y.o. too. And then eventually, cousin number 3 shoved her 2 sons onto the rink!
By 6 to 8 years of age, 4 of the 9 boys pulled away and said they prefer footie and golf. One (to the mother's horror,) preferred drama and dance. Oh dear! 
Sorry mommies, you can't live your dreams through your boys all the time. Get your own life!