> in what world does anything give you or anyone else the right to decide to probe people up their rear end
A world in which these people bet on heinous things while insider trading/influencing those very things.
Privacy in gambling or insider trading is not a constitutional right.
Insider trading itself is only a crime when someone's betraying their fiduciary juty to an organisation, e.g. their employeer. There's nothing morally or legally wrong with using one's private information to make informed bets on other things, and economically speaking it produces better market prices/predictions because they reflect more information.