I think that's the right reason, why stellar can be left far from the ripple. I also strongly disagree if the stellar is used by criminals, should the developer know and make a firm action against it.
The people in charge of Ripple can monitor, freeze, and reverse your transactions.
This guy claims that if they want to, "they will be able to" do it. What kind of argument is that?
Stellar is a x5 coin at least - highly undervalued. It should not be 1/10 of XRP.