It's a logical fallacy. You are the one who handwaves everything he doesn't like. Are you doing a logical fallacies speedrun?
The "meme". Jesus dude, get your sh*t together. You already use "Burden of Proof" and "Argumentum ad Populum". Funny thing: You dismissing logical fallacies as "memes" is actually an "Appeal to Authority". You dismiss actual logical fallacies. Without any reasoning. You seem to be unable to construct or comment or counter any logical argument. You never add to a discussion. You just rage. Be better.
Edit: Gotta try that sometime. During a discussion just call the other side's argument a "meme". So incredibly stupid it has to be seen