Well it depends on what you see as an acceptable cost of the benefits of social Media. You could easily find differences between platform, in their function and in their moderation. These differences might be valid reasons to give it a different evaluation.

But in case, you want to argue about whether or not Twitter is moral; and/or whether or not Facebook is as bad as Twitter, I am not interested in the discussion and my points weren't made in support of the position that Twitter is harmful but only in "defense" of people voicing their moral evaluation of social Media.