I like how he divided boostrapped and Post-Product Market Fit. The difference in marketing strategies is huge. Post-Product Market Fit may well focus on killing it on adwords alone (ecommerce mostly), whereas content marketing is working wonders for boostrapping companies, and is hard to replicate for bigger ones (maybe it just doesn't work at scale?).

The skillset are so different that "what took you here won't take you there":

Post-Product Market Fit: modeling, optimization, hiring and firing. Letting data decide.

Boostrapped: writing well, being active online, jumping on early trends fast, listening to customers, growing a list. Often there's no data to justify decisions.