I assume the "sonic movement" you are talking about (with Burial's 2007 release, Untrue) is the rest of the world catching up to the UK's decade-long obsession with dubstep, which is fine but you should probably elaborate on that.

True, but I'm reluctant to call that the defining moment for any "sonic movement". More just the fact that Burial, and that album in particular, remains as one of the most recognizable moments in the genre in terms of public interest and recognition. Not that it all began with him