If I flag you once, indeed, I am under no obligation to justify that, but if I automatically flag every of your comments and posts, until you leave STEEM, then I think I should have a good reason for doing so and be able to justify my behaviour, because otherwise one might think all I do is damaging the platform.

^ My point is this is how you feel is appropriate to behave on the system. You want others to behave the way you feel is 'right'. Other people are going to have a different view on how it is appropriate to behave, and they get to decide that for themselves. That's what's happening here. Whether they are "right" or "wrong" in their actions is a matter of opinion.

If they have stake in the system, they get to use it how they want. If others disagree with it, they can use their stake to counter it. It's not a perfect system by any stretch of the imagination, but those are the rules we live under.