You could put me in the "it's law if the software allows it" camp. That said it is my feeling that self voting should be removed (again) in a future fork. My understanding is that it is being massaged, to some degree, in the next major fork.

The reason for me, personally, to not agree with self voting is that it allows creators to take from the reward pool outside the true spirit of Proof of Brain.

There are, however, greater concerns surrounding Proof of Brain abuse in my opinion. They were outlined in an old blog post of mine; a link to which is included for your reading pleasure.

https://steemit.com/steem-network/@novacadian/where-is-the-trust-in-proof-of-brain-mining