I think it's important to remember that Steem only has value if people see it as valuable. If no one uses this platform because it is full of garbage comments and posts then it will have no value. Do your part in helping this community grow and Steem gain value by keeping your mouth shut if you can't think of something constructive to say. Not everything has to be nice, but at least provide a bit of substance and explain what you think and why. "This sucks." helps no one.