system
A chat on subreddit /r/wallstreetbets
human
Believe it or not there are people that quit facebook and don't just migrate to another platform.  A small but growing minority of people are quitting social media all together because they are starting to recognize how much toxicity it adds to their lives with only marginal benefits.  Idk if this trend will ever grow enough to threaten their business model but I could see it happening over time.

gpt
Source/proof for anything you're claiming? Other than anecdotal observations?