Yeah, I'd rank them as in the top 5 biggest DJs in the world right now. The break-up must be on bad terms if they are doing this at the height of their popularity.
Does this mean they have fallen out? Or just that there won't be another album/tour under this name? I mean, they've always existed under this name, but didn't produce albums using it...maybe just felt it was a one album thing, like many songwrites in the 'punk' genre do? Just my opinion, not song you're wrong at all!