While I agree with your premise, I don’t think it applies in this case. It is good that people are more weary of what they read online. For one, the internet is rarely the source of truth. There are too many bad actors around. Second, if someone disagrees with a comment, they should reply to that comment with another well thought out comment. Downvoted and flagging require no effort and is an emotional reaction more than a logical argument. This can be gamed easily. Upvotes and downvotes are unhelpful in that herd mentality can easily game the system. Flagging people’s genuine comment is bad faith and has nothing to do with disagreement.