The problem mentioned in the parent comment was the volume of fake accounts overloading customer support. If it’s no longer free to create spam accounts for phishing etc, the profitability of scamming will shrink and decrease the incentives. I don’t think feds are exactly slamming the support queue.

More importantly than the bot problem, it would decrease social media usage in the aggregate while also encouraging more competition. Much easier to bootstrap a business if you’re not having to compete with big tech offering the same thing for free because they can subsidize the losses.