Want to scrape data from the HTML? They aggressively detect anything that may or may not be automated, and give you a CAPTCHA.
I see it as yet another abuse of their monopoly position. So many artists post public updates exclusively to this platform, and this is exploited to make sure everyone stays locked in and is forced to use facebook directly, ads included. Even the slightest competition would make it obvious how ridiculous this is, but the current monopoly is self-perpetuating.