Agreed. But the minnows can sell SBDs just as well as the whales can after voting it back to themselves.
I don't mind self-voting within reason. Not even a little bit. It is a perfect way for users to ensure they are getting some value out of their investment and it scales for the size of the account, which is kind of beautiful.
I think it is funny to makes excuses or pretend that it is being done for the good of the system. Just do it, if you want to do it. :) Merry Christmas if you celebrate.