They never went beyond that though and no, the Barbie brand has been trying to move away from that superficial fakeness for decades. Thats why you have every skin colour and profession in Barbies now. The film was made by Mattel as well... I don't imagine they were satirically mocking themselves quite as much as you are suggesting.
The characters within the film were
bitingly critical of how, despite the ridiculous promises of the Barbie brand, women can’t become an astronaut or whatever insane fantasy job they could have, nor have impossible figures with easy happy lives. This comes up in a number of scenes but most obviously in the scene where Barbie gets a dress down by the school girls.
I mean, here’s the scene:
The “happy clappy fake positivity” is
absolutely what the film was intentionally addressing, amongst other things. Just look at how Barbie announces that all the girls should be thankful for her being empowering, only to be told that she actually just represents “sexualised capitalism” and that she “set the feminist movement back 50 years.”
In the film, Barbie learns that being a human is beyond the shallow depictions of womanhood that originally she believed were inspiring. The young girl likewise learns that it’s OK for people to draw inspiration and happiness from things even if they are (from a certain point of view) shallow and imperfect, if it’s a meaningful human experience.