I'm exhausted of these conspiracy theories of "the other side doesn't like me", and offering absolutely zero proof/evidence of their claims. "Somebody did something I don't agree with, so there must be a hidden agenda." The problem is that anyone that believes in these conspiracies will absolutely not listen to counter-evidence. To them, it is all just part of the cover up. I'm not saying give up trying to counter them, but it is absolutely tiring.
Edit: Hit submit too soon
If you'd commented on the substance of the person's argument instead of attacking them personally based on ideology, I think your comment would have done much better. You could have even presented evidence from the persons twitter feed on this topic and used that to further clarify their opinion and how you felt their opinion in more context was wrong.