Logan posted an interesting video on his channel where he proposes that 2012-2016 saw a renaissance in extreme metal, and he offered four lines of evidence to support his idea. I thought it was in interesting possibility so I thought I'd compare those five years to the previous five years (2007-2011) to see if I agree with Logan's assessment.
Link to Logan's video:
   • 2012-2016: An Extreme Metal Renaissance