His title should really be "The decay and fall of guest blogging for SEO" because guest blogging is still relevant for traffic, awareness, thought leadership, reaching new audiences, etc.
So while it may no longer a worthwhile SEO strategy, guest blogging still has some other PR-related upsides to consider.
So while it may no longer a worthwhile SEO strategy, guest blogging still has some other PR-related upsides to consider.