If you think OP is smearing, you can refute his argument with facts and flag his comment. It’s a human bias to think someone whom we disagree with has a malicious agenda. Democracy can survive the worst oppression, but will perish if we fail to conduct civilized discussion and start accusing and labeling each other when we disagree.
I know we all have an impulse to take the easy path. But please think about what if you happen to be wrong, how a person would feel if he’s labeled a liar/paid troll for having an account that looks suspicious to some, and what meaningful discussion we can have if we just call each other liars?