Interesting they changed the page, but didn't post any explanation. The reduced number of prizes could have just been simply a glitch. Or, perhaps, the Florida Lottery frequently quietly reduces ticket quantities / number of prizes, but for whatever reason that one slipped though. There's very little transparency regarding ticket manufacture, distribution, prize allocation, security, etc - a mystery leaving open many avenues of abuse...
Often there's little outside oversight of lotteries. In contrast, casinos in many jurisdictions, such as New Jersey and Nevada, are overseen by a separate commission.
As for the public at-large, many players don't understand the basics of statistics; much folklore. Can't fault the lottery on that. However, player ignorance makes pulling the wool over their eyes easier. Heck, some readers here, even after much explanation, don't fully understand the issue you're pointing out.
It's an uphill climb to get the public interested in putting a spotlight on lotteries. It will likely take some huge scandal to force meaningful reforms and more transparency. If the Florida ticket issue is something you intend to pursue further, reach out to others with similar sentiments and start a non-profit to put some public pressure on lotteries / lobby for legislative changes.