So, you basically skipped all of the people who have above 500 Steem Power and can throttle their voting, when they vote on other articles, but may only post 1 or 2 of their own posts, which they can vote at 100%.

Not at all. My filter does not depend on steem power. I don't know where you got that from? On the contrary, my script treats everyone equally, regardless of how much steem power they have. My filter skips over people who are not careful with their voting power and as a result might have very little power left. Without my filter some of the people on the top list had only 1% voting power!

But, if they didn't want people voting for themselves, then why allow it in the first place?

No one talked about not wanting people to vote for themselves. It's when someone is casting almost all of their votes on themselves that it's frowned upon in the community. Even 50/50 does not bother me personally. Also, please note that this report does not take into account users who are upvoting themselves from another account or those who are making a fortune by selling upvotes which I consider to be worse than self-upvoting!