pre·ten·tious
/priˈtenCHəs/
Adjective
Attempting to impress by affecting greater importance, talent, culture, etc., than is actually possessed.
The first teaser was kinda nice because you at least believed she was into the whole "mature, dark" stuff. Mature, dark stuff could be something like "Bedtime Stories", for example. But this teaser only shows she's not into it really: there's still an element of humor into it. There's nothing humorous into "dark and mature" if you have a brain.
artist should never shun or bash their past work...
I don't see it as bashing her work, the way I see it, is that it's just a cheeky, humorous way of saying the TD era is over and the new era is beginning. It's playful