Sadly, as best I can tell, there are no real fines for WARN violations - at worst, Musk as to pay 60 days income and benefits, as he should have done in the first place. There might be a $500/day penalty as well (not sure if that's per person or total - either way, chump change to most employers that are subject to the WARN act).
The point of the law is to provide worker stability. 60 days payed severance does that just as well if not better than 60 days notice and no severance.
Well people don't seem to get it, so I guess you're right.
As others have pointed out, Elon has already been involved with WARN lawsuits from former Tesla employees. He surely understands that the law exists, and what Twitter's obligations are under it. So what else could result in this apparent indifference, which so many other people see, and care about so deeply? Ergo, he must not care about the legal implications of how he is going about these layoffs. Hence, he must be ready to just pay the fines.
But, sure, expecting people to connect those dots must be more appropriate for other social media platforms.
And not just Musk. Big companies regularly put themselves in a position to be fined by regulators. Either their lawyers are stupid (they probably aren't) or it's just a cost of doing business (it probably is).