Nope. If the messenger has a history of being unreliable, it's valid to call him out. I'm glad you read a TikTok guide on fallacies, but this isn't one of them.

OK, then. Let's do the same with your profile, so in your About page I see this:

"About: Old programmer Tel Aviv, Israel"

Most of the information coming from Israel about Israel seems unreliable, too.