That is about adwords checks as there is no ads on their web site. And that is quite commonplace nowadays as a lot of web hosting service providers give that as free addon to the existing web hosting accounts.
But to be fair he did provide an example which makes it a bit different. But LunarPages are pretty big. They don't need Adsense and they don't use it on their site so I'm a bit confused about that.
But if a host has Google adsense ads on their site it's an excellent indicator to stay away. With the amount hosts spend on Adwords they are just giving away incredibly targeted traffic for peanuts. These hosts most love these types of hosts. A host that puts Adsense on their site would do better with a string of affiliate banners.
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That might be some wait. It's been a few good years that top paying affiliate programs have stabilized at ~$100. With budget hosting prices going down in real terms (not much more to go beyond "unlimited"), I don't see much reason for affiliate payouts to pick up anytime soon.