Yup. Do you remember the Rollei 35? One of the smallest full-frame 35mm cameras ever made. 40mm fixed Tessar or Sonnar lens, scale focus. The lenses were fast, but nobody used them that way.
There are cameras designed for precise focusing of a wide-open lens, but the Travelwide isn't one of them. Its use case is wandering around a strange city, capturing scenes in a way that can support good-sized prints that retain a sense of endless detail and a smooth tonality characteristic of large format, using a lightweight and cheap camera that can be thrown in a suitcase. It can be used for other things, of course, but that's what it was optimized for. Making it better at other things would make it heavier and more expensive.
I highly respect Ben and Justin for their good sense in sticking to the use case and requirements. And I think they have, at the same time, unravelled the notion that large format requires bulky and complicated equipment and exacting technique. If there's a bit of focus error or camera shake, it won't matter for the biggest prints most people make at home, which is maybe 16x20--only a 4x enlargement.
Sure, there are uses for longer lenses. I'm the one that modified a top-rangefinder Speed Graphic that is cammed for the 127mm lens by adding a side Kalart adjusted for a 8-1/2" Ilex Paragon. But the lens is big and heavy, and the camera is hard to use hand-held. And though I travel constantly, I've never yet taken it with me.
Rick "thinking the more limited camera that actually gets used beats the more flexible camera that doesn't" Denney