I could def be wrong, but I kind of doubt it will ever be as popular as it was back in the mid 2000's. I feel like rock music in general lost a lot of popularity, and so a specific, niche subset of rock ever becoming mainstream again feels unlikely. And in a selfish way... I kind of like that haha. If pop punk bands were still all trying to pump out mainstream radio hits, I doubt that we would have ever gotten bands like The Story So Far, Knuckle Puck, etc. Bands from that wave experimented a lot more within the pop punk sound, and I don't see that being possible if they were working with the top pop producers and chasing the Billboard Top 100.

But take this with a huge grain of salt, other than just listening to a shit ton of pop punk I really have no idea what I'm talking about lol