Personally I’m capable of disagreeing with someone’s point of view with voting to silence them and hide their view from others. Sunlight, disinfectant and all that.

No, I mean dishonest. When people gang up to push each other's blogs/startups/whatever, it's dishonest. When political groups organize to mass upvote/flag, it's dishonest. They are purposefully sabotaging the wider community for their niche interests. They are cheaters. And IME, more often than not, they are immoral and/or anti-social.