You're right to be distrustful.

It's easy for people to read the law — or worse, opinions about the law — and mistake this for knowledge. One of the benefits to me for ChatGPT is that it gives me a stick to measure against: I know it's flawed because of how it writes code, and I know it will be that level of wrong about law too, and I also know that it's wildly better about law than I am. This makes the degree of my own ignorance much more intuitive, and reminds me that I can't just look at the text of the law and go "ah-ha!"

While I suspect you're right that Facebook will attempt this, I suspect they are much like Apple when it comes to not really believing that the EU is serious, and it will explode in their faces — a few years back, Apple put in rules for advertising privacy ID, which (while acknowledging my ignorance above) didn't seem too different from what the law required, yet Facebook was very unhappy about this.