Yeah. That little block of text that says "Sponsored" alone is 4,224 characters of nonsense. https://pastebin.com/DZdNkiw2
That's insane!
The insane but logical outcome of the arms race between advertisers and adblockers.
I tried to scrape a private Facebook group once and came away with the same takeaway about that markup. They junkify everything so aggressively that it might actually be easier to render the page in a headless browser and "scrape" it with OCR.