To give her her due, she was determined and resolute in her ambitions. I suspect, however, that much of what the right see as ideological correctness was no such thing. Her motivation was not to dismantle the state so much as to ensure her continuing control of it.
As I slowly became aware of politics, I admired Thatcher, like many others did, as a "strong leader." It was only after I discovered I was gay and studied politics that I realized her policies were, in fact, anti-gay.
Progressives will likely take umbrage with the movie's glorification of Thatcher. But in the end, Thatcher's obstinacy becomes her downfall. No matter how the movie glorifies her rise to power, her fate is the strongest indictment of her character.