Older characters acting like teens or 25 is a completely different topic. The statement that old characters should not be leading story is the one I don't agree with. I not only NOT agree with it, but I find that older characters sometimes are desperately needed and missed.
What Bold for example is LACKING right now is that older-matriarch type. I am starving for a character that brings wisdom. Age gives opportunity for experience and that is not a negative - we need characters that have been through it. I am bored with the virgin in distress or the whore of the week, which Bradley always writes. I need some substance.
And yes, people don't always watch to see people their own age, but anyone who reads and knows psychology, knows that what you see - you unconsciously associate with or don't. It is not even conscious process. So yes, I do want variety and older characters who people can relate to and which problems and issues are relevant to them. I will quote my mother who watches tv all the time (she is definitely a target audience, since she also watches commercials and buys things) and always says to me, when I try to suggest to her some too-teen or too-hip show.
I don't find these shows funny, it's not my type of humor and these are issues that I am long past. Please don't make me watch this.
And then she starts watching a show where there are people over 40 in it. People who some may call older. This is a completely normal thing for some people. I myself can't stomach some things anymore and I'm only 29. And that's why shows have target demos and all the world of ads and commercials KNOW who they are selling to. To know the age of your main audience is CRITICAL for success.