There's certainly a good argument to be made that the fine should have been bigger, but statements like this misstate the facts: "Here’s another way to say it:

There's certainly a good argument to be made that the fine should have been bigger, but statements like this misstate the facts: "Here’s another way to say it: the biggest FTC fine in United States history increased Mark Zuckerberg’s net worth." That's not what happened. The stock went down in advance of the fine because the market knew it was coming. The fine turned out to be a bit smaller than expected so the stock recovered a bit. But Facebook stock would definitely be worth more if the FTC hadn't acted at all.