bullshit
it's not indicative or attributal to hypertrophy.
running 20kms certainly will give you doms if you're not used to it, but it just as certainly won't hint at anything anabolic, and as far as endurance adaptation goes, there are much more efficient and effective ways of building endurance in the muscles than suddenly going on a 20km run.
you can also induce a higher incidence of doms if you simply space the frequency of your bodypart workouts longer. will that mean that, because you're getting very sore once a week, this indicates sufficient intensity for growth? hell no. otherwise all these weekend warriors with mondayitis would be the strongest men on the planet.
doms does not = growth either directly or indirectly. move on now...
Week 1: 4 sets of Bicep curls = sore
Week 2: 4 sets of bicep curls = not sore
Week 3: 5 sets of bicep curls = sore
Week 4: 5 sets of bicep curls = not sore
Week 5: 6 sets of bicep curls = sore
Week 6: 7 sets of bicep curls = not sore
My point if you took the time to actually read my post is this: DOMS can be used over time as an indicator to gauge the body's adaption to increased intensity. Increased adaption = more strength = more endurance = eventually hypertrophy. At no point in my senseless incoherent rambling did I ever remotely state that a single bout of DOMS indicates growth. Comparing running to training biceps does not help to further the discussion, it only perpetuates a discussion comparing apples to oranges.