By nanny state, I mean one that tells you what to eat and where to live and eventually, if we're really lucky, who to marry and breed with.
And what they're setting the precedent is that they can and will file suit against anyone who had the gall to lose their investors money. IE, if you start a business with help from some investors. The business dies after 6 months and your investors are out their money. With this lawsuit the SEC is saying that they could file suit against you for losing your investors money, probably even would if the amount were large enough or the investors important enough.
Once again, by and large The Market is the largest legal gambling operation on the planet. As such, you should only risk what you can afford to lose.