yes thats a way to make the dividends pay out in your favor, which as a share holder you should be able to do

it is discouraged, perhaps even inconvenient to reward yourself on steem, which I think is enough, you should not force people to not get the dividends for their shares, you should just encourage them be social and to give it to other people by voting, if they really want to get the dividends themselves they should, because they invested in the first place, why do you think steem allows you to vote your own post in the first place?

I dont see the problem. It seems to me that people add their own rules to the system, like getting the rewards for your investment is bad, if every voting share they have goes into paying out themselves, thats fine, its the dividends for their shares which would only be worth what it is thanks to the investors.