I think there is a side trend of NOT knowing what Moe is.
After reading wikipedia, generaly the consencus is the artistic style is that the girls are older than (in appearence and characterisation) than that would of lolicon, but still considered adolescent.
Due to the fact that it is animation, one could have an "adult moe" female that looks as young as her children.
Anime features characters and characterisations of people in society, if the audience cannot relate to the characters in a story anime simply becomes flashy cartoons.
It is not unheard of in live action media that you see actors that are much more attractive than real life counterparts, as such anime is simply copying the manners of which other media trends have moved.
In the end, Moe is simply a word used for describing an overgeneralized animation style, maybe in the next 10 years another more descriptive word will be added to our various slangs in use to describe anime based media.