I guess you could say that Blink is now the most relevant pop punk band. Or maybe just that their fanbase is a lot more dedicated while most of Green Day's is made up of casual listeners who are less likely to buy an album.
No, Green Day is still way more relevant than Blink. Everybody knows who GD is, but my sister in middle school said that a bunch of people in her school haven't even heard of Blink. Which is incredibly sad.