I see both sides. For one, users should be able to vote their stake the way they want, and as the platform allows. However, it likely is not in the best interest of this place long term if all the largest accounts started only voting their own comments...

In my opinion the best solution is at the code level as the current model can't police the entire platform. They should limit the amount of selfvotes per day. For example 4 self votes per day would get rid of a lot of the comment self voting as well as the post spamming... which is only getting worse.