If is really a pro he is getting paid for the Otliebs as well, and just about anything else that makes an appearance, including at times stuff that isn't bicycle related. Read Jack Sampsons book on being an outdoor router. They don't mention anything they aren't getting paid for. That said, when the Crazy guy got a Comotion he didn't get it for free. You really have to sell a lot of bikes for comping a bike to make any sense.

The S&S aren't made by Comotion.

For the most part his claims are actually modest. About the only thing that I didn't think was true was claims about the ruggedest terrain, clearly not.

Carries three water bottles, will wonders never cease. A lot of claims of that type are the same for any bike.

The main one that is true and unique to custom bikes is the customization piece, but he doesn't go on to mention what if anything about that paid off.

As far as head tube size, no, no advantage in stiffness or bearings. These are characteristics, but not advantages. The oversized bearings are for taking huge drops on MTBs, and in his case it is also an internal type. Touring bikes were always fine with 1" but 1" is sorta obsolete, like a variety of things from the past that were better, but have been beaten down by progress. I use oversize headtubes because you need them for some bikes so I only have the tools for the larger size, just makes stuff easier, not that Comotion would be worried about that, they are very well outfitted.