This is sad, fair enough children can learn bad habits from tv programmes, but its not just cartoons they can get bad habits from, but it's our job as parents to actually teach them the way they should and shouldn't behave.
My daughter loves peppa pig and has Learnt loads from this. She knows she's not aloud to jump in puddles if she isn't wearing her wellies and this show helped her with her counting and also how to share toys. She's not a perfect child, but no child is.
If she started to act out, I would never put it down to a cartoon, I'll just sit her down and explain to her why she should act the way she just did. She knows she can only watch cartoons if she's being good and as soon as she starts messing around she'll get a warning and if she carries on they go off.
Most parents would say their kids would pick up bad behaviour from nursery and school, but you wouldn't take them out of it would you....
I think some people just like to complain about everything....all I say is stop complaining and actually spend more time with your children and then they will probably stop acting out.....