Not necessarily because you want to, but just because that’s how the system is set up.
I used a personal example, but the complaint was about people being incentivized to downvote (past and future) stuff by the outgroup while upvoting the ingroup, whether or not it’s “mass” voting:
it incentivizes detractors to go back and downvote your other stuff as well. [...]
So if you want the forum to remain dominated by your ingroup, better upvote your ingroup’s posts/comments
which I then expanded on with examples like:
If someone is spreading opinions you disagree with, then the karma system makes strong-downvoting them an excellent way to hinder their ability to do so. If your friend makes mediocre posts but he also upvotes all your mediocre posts, then upvoting them is a great way to ensure your posts get more exposure.
My complaint was the incentive structure:
I used a personal example, but the complaint was about people being incentivized to downvote (past and future) stuff by the outgroup while upvoting the ingroup, whether or not it’s “mass” voting:
which I then expanded on with examples like:
I had done it, see: my screenshotted comment.