I think Sam's point (or concern) is with the so-called "Startup-Culture". There's a big focus on...
-1 Presenting a basic idea
-2 Get into Y-Combinator
-3 ???
-4 Profit
Or, I think that's how startups are interpreting what being an entrepreneur is all about.
I think Sam's point is that the product shouldn't be a placebo that happens to raise money. Or, to better say it, you are not here to be good at fundraising. You are here to be good at making a product that will (wait for it) change the world.
I think the success of those so-called unicorns (Dropbox, AirBnb, Twitch, etc.) had caused this problem. There are a lot of investors that are willing to spend away hoping for something to stick and to become profitable. On the other hand, there are a lot of startups who's soul purpose is to be good at selling a 'not fully realized' idea, raise a ton of money, and then cash out. Oh, and have 'fun' while doing it. Why? because it works!
It reminds me of the Hubspot videos with Daniel Lyons. https://www.youtube.com/watch?v=RVSLLvHceSA
Now, if someone was banging on my door desperate to give me a crazy amount of money with almost no strings attached to but into my 'shell of a product' I may consider taking the offer. But doing so may benefit me, but could cause harm to those who really have a great world-changing idea.