It's because the musical trend is getting ready for another bandwagon to lead/fleece the flock.
Originally Posted by shoebox
It seems to be a broken beat based trend, followed by a four beat trend, lasting 5 years of "popularity" cycle (even though the genres are around before that period/after that period of being on the radar)
genre / years of popularity / beat structure
nu school breaks 1997-2002 (broken beat)
minimal techno 2002-2007 (4 beat)
dubstep 2007-2012 (broken beat)
moombahton 2012-2017 (4 beat)