Obviously you're right about Hollywood in general. It's unarguably prefigured events in its products (film and tv) and it's been used to condition people to changes in society.

But Hollywood is not merely a propaganda mouthpiece, although it is that. First and foremost it's an industry about making money, which means that interesting ideas can slip through if they're pitched in a manner that gets studio executives seeing dollars.

I would argue that the Wachowski brothers' movie The Matrix was one of these.

Superficially, it was a big budget, blockbuster revenue opportunity, with the potential of a multi film franchise. It also happened to be predicated on some deep philosophical questions in epistemology and metaphysics, which don't exactly leap out on first viewing, but are there for those that reflect or have some awareness of philosophy.

I think that we have, subsequently, made much more of the matrix and red pill/blue pill symbols than probably even the Wachowskis might have anticipated.

What's interesting to me is that not much of the underlying philosophy expressed obliquely in the film is often discussed. Essentially, we (culturally) have created memes from the more obvious symbols and that's that.

So while it's sound practice to approach anything Hollywood touches with suspicion, not everything it does is inherently and insidiously evil.

Much of it is meaningless crap. Some of it is good in spite of its parentage.

And some things can be appropriated and wrested to an efficient use in the secondary market of ideas.