Does the FE have the same MER as the DSC version? If so, it doesn't matter to you that your adviser gets paid more. In this case they actually get the "more" from the MF company. A big reason for the lower trailer fee for the DSC version is that the MF company has to recoup the commission it paid up front.

What would be despicable would be to get you to sell and repurchase another DSC fund, so that they can collect a new commission while locking you in for another 6 years.