You probably should have avoided putting a list of "offenders" in your post, as @emrebeyler and @trumpman point out. As is, you make it seem like you are jealous that they can "get away with it" while you can't. You can make your point without naming names.
That said, personally I am divided on the issue. I almost never upvote myself unless my accident but that isn't because I am opposed to the practice, but simply because I want to save my VP for curation. As you say, if people invested a lot of their money here, well, it is their's to do with what they will. At the same time, as @galenkp often points out, it is well within his (and others') rights to also use their investment as they will, which might involve DVing people. If we all only upvoted ourselves, after all, the social experiment here of helping other people and being a community might suffer. Why curate, after all, if I can just buy Hive and upvote myself everyday? Or multiple times per day! On the old chain that Korean charts guy who upvoted himself for quite a lot of money... how many posts did he do per day?
Anyway, I don't think it's necessarily a cut and dry issue. It boils down to 1) On a personal level if you upvote yourself you are taking away some VP that you could be using to curate others. Whether you think that is greedy or wrong is up to you. 2) On a network level, if you decide to use your stake to upvote yourself, you have to accept without complaint that others might DV you for that.
no, I definitely don't want to avoid any confrontation. I think it's good to have this discussion. As already stated it wasn't my intention to create a target list, but how else should I reveal what I found? I also didn't claim this to be a comprehensive list at all.
Thanks for stating your opinion on this matter!