You’re kidding. It never occurred to you that you might not be neutral enough to accurately moderate during an argument you’re personally involved in?
What’s your “working theory” for why the site prevents upvoting your own comment, “even though” you could just register with a different name and upvote as a sockpuppet?
Note that one can both upvote and downvote comments in an exchange they’re involved in. I don’t have an explicit ethic of not voting in exchanges where I’m involved, but I’ve frequently upvoted comments that have disagreed with me and (IIRC) rarely downvoted them. I would suspect many people to be the same, and see little trouble with the practice. If you want to avoid a bias, “in exchanges where you’ve participated, only upvote comments that disagree with you (or are neutral), and only downvote comments that agree with you (or are neutral)” would sound like a better policy than an explicit ban on any voting.
Note that one can both upvote and downvote comments in an exchange they’re involved in. I don’t have an explicit ethic of not voting in exchanges where I’m involved, but I’ve frequently upvoted comments that have disagreed with me and (IIRC) rarely downvoted them. I would suspect many people to be the same, and see little trouble with the practice. If you want to avoid a bias, “in exchanges where you’ve participated, only upvote comments that disagree with you (or are neutral), and only downvote comments that agree with you (or are neutral)” would sound like a better policy than an explicit ban on any voting.