I agree, the on-feed button helps voting without reading the article. We shouldn't have that. I have to admit I always try to vote at 8 minutes so I often don't finish reading the articles before voting and sometimes just vote at the feed, and planning to read it later.
Also if we are removing the on-feed button. I think it is a good idea to also remove the button from the trending /hot pages.
But I think the main problem is the people who are using autovoter bots. They are not using steemit, they use the steemd directly, so removing the button won't affect them.
Yes the bots never actually go onto steemit and don't even need steemd they can't just connect via an api or node.