Yes I agree...
I haven't seen many downvoters using bots eather but as in all cases there are some that uses things wrong. Like downvote a newbie Who didn't even knew what a bot was ... But I belive they can be defeated.
I belive in the good in People and as I said my experience with the downvoters has been that they do it for a reason and they do give a answer if you ask.
Thank you for enlighting this subject, its very much a subject that is all around at this time.