They used to play dark rolling sets only 4 years ago, and now the music they make just makes me laugh, its actually really poor music, let alone bad dnb. Made for dancefloors and 17 year olds car trips down to Newquay.
An annoying thing about them is that, every one who argues for them usually says...
"Yea put its not selling out, its progressing their music, they are making better music that more people like..."
The truth is that they 'progressed' (arguable), pulled in a larger audience, and since then have gone stale and kept the same sound.
Its similar to a band like coldplay... they found a popular sound and then just stuck with it really, nothing new but workable commercial music. Compare them to Radiohead, who flirted with some songs that gained popularity, but still maintained their own stylings and uniqueness.
Radiohead have and always will make great music, whereas Coldplay are stuck in the rut of selling albums.