Exactly the point. That is part of the reason why making characters who aren't white and male are so difficult. If you add any personality to them, it's deemed racist or sexist. Which is why Token females or non-whites are just that. Devoid of personality out of fear of retaliation.
I mean, with Sesame Street, all the characters have some problems.
Telly isn't just a worrywart... he overly emotes all his feelings. The Count's counting can be seen as obsessive cumpulsive disorder. Zoe's personality could be misconcieved as ADD or ADHD. Rosita's panicking (where she speaks only in spanish and really fast) can be concieved as a stereotype..... when you get down to the bottom of it, the only characters that these people have no problem with are the kids that don't really do or say anything, and are just in the background. And that's not beneficial.
To me, the world is full of people with problems and quirks. How does it look when your kid grows up around characters with no personality? How can they relate to real people? There's a bit of Oscar, Cookie, Bert, Snuffy (et.c) in everybody.... I feel these characters having quirks, emotions, feelings, are better for kids.