Hey 
I suspect it was an automated vote via 
IMV Steemit kinda deserves that kind of behaviour. It allows big players to come in from other platforms who already have thousands of followers and lets them clean up in the rewards stakes. Then you have individuals who actually have no interest in the written content of the steem platform and purely see it as crypto speculation market. Then there are those who have not earned their steem dollars & power but simply bought them on the market place. Some of these individuals and I'm not saying all, wade through Steemit blowing away the earnings of people who on the whole don't deserve it and yet those who do deserve being blown away seem to be in cahoots with powerful members.
I've already written that IMV HF21 was bad, no scrub that, it was disgusting. It is designed to reward the rich and powerful while making the less well off even worse off and yet I see lots of encouragement like "Stick with it!" and "We need New Members fresh meat to keep the platform active and mine generate steem dollars." Steem(it) did need to get rid of the parasites it had (has) but the way it goes about it alienates some good people who are willing to work hard for the community, so much so that like me they either cut their contribution to a level of barely alive or leave altogether.
When you first invited me to join Steemit I loved it, I was excited and was on the platform ALL DAY EVERY DAY I was happily building up a following, read all help information I could find and swore blind I wouldn't stoop to using bots or multiple accounts purely to enrich myself and worked really hard to be a good, well behaved, worthwhile member of the community. The problem is, after a year it felt like I was being used I felt like the momentum of my account was grinding to a halt and yet my contribution level remained the same. It was at this time I turned to support groups such as shadowbot in the hope that the old adage of Saftey in numbers was the way to combat what appears to many to be an unfair system.
What initially drew me to steemit doesn't seem to hold true any more, the argument of "You write a lot of bilge all over the internet for nothing, why not write on a platform that rewards its authors?" seems worthless to me these days. At the rates I get rewarded I estimate it will take me seven to twelve posts to achieve one steem power token and steem power seems to be the key to unlocking worthwhile rewards.