I actually think this improvement is indeed an improvement. I don't think anyone except bot operators benefit from bot voting. It is also affecting the content that makes it up to trending feeds. Bots have destroyed the ability of people from earning curator rewards. I think this is better than a bot detection system that throws up CAPTCHAs because it lets people do it. Ok, so now maybe the bot-game players will start playing the downvote but then there will be a countermeasure for this as well, and this measure goes towards this. By downvoting bots we can bring the process back to natural human beings and stop the gaming that is adversely altering the rankings and reputations especially of those who are smaller in their position, working their way up.