That's what I thought too - either not enough demand, or people complaining.
I always say the easiest way would be to offer rolling "equivalent to a modern Fender guitar", the same as they say about the Standard Thin profile. That way, as long as that's what you deliver, you're pretty much covered.
The thing is, these hypothetical people complaining that it's the wrong amount of roll are stupid. How did you specify the amount of roll? "Medium rolling"? That means nothing. You need to quantify it. If you don't quantify it, you can't say it's wrong when you get it. Like asking for "some potatoes", being given 4, and complaining because you meant 6.
I think maybe part of it is, you can't really program fingerboard rolling into a CNC machine. I mean, you could, but it'd be a complicated program and it'd take the machine ages to do. And if you can't get the CNC to do it, it's gotta be done by hand. And if it's done by hand, it won't match an exact specification at the end, and now all of a sudden you're not covered any more. Again, at that point, it's outside Warmoth's business model. They do parts with options, rather than the places that do "full custom" work. The pieces aren't the result of an ongoing dialogue with the customer, they're the result of an order with a specification.