Tags are extremely useful for people who want to ignore arguments based solely on who is making them. I really am not a fan of how popular they are getting.
But I don’t care about the "who", I care about their arguments. The user in question has shown with their arguments, that they are like a tabloid paper, not only do you have to take what they write with a grain of salt, it’s better to start from the assumption they are lying. It’s the same reason I use the Axel Springer (German publisher of Europe’s biggest tabloid BILD) blocklist, so visiting their sites takes an extra click.
edit: If I cared about the who, I’d remember the names.