They're not saying to not use an advertising model. They're saying "don't forget about the regular old proven model of charging money for your product — it's s

They're not saying to not use an advertising model. They're saying "don't forget about the regular old proven model of charging money for your product — it's still relevant and it has these great attributes, here's our experience with it". Don't take their advice personally, because it's not. They're just broadcasting their own experience.