Any single camera/lens is a constraint. The price kept him from choosing the Leica. With the Leica, you're forced into a different set of constraints. It's a monochrome camera, with no ability to do color. In the same situation, I'd be tempted to shoot everything and then mix down to monochrome afterwards.
Some people deliberately shoot on the "Diana" camera, which is horrible.[1] They feel the limitations of the camera force them to be creative.
The author went with a Fuji which does color, but likely keeps it set in monochrome mode.
>Part of me is happy that the photography industry has been disrupted by the quality cameras in cellphones these days.
DSLRs are far, far better sensor/lens systems than you'll ever pack into a phone. It is sad that the economies of scale are no longer going to be available to help push the DSLR form factor any more. That is the extent of the disruption. DSLRs will always be better in the technical and optical sense than a cell phone camera... with one exception
the golden rule of the best camera
The best camera is the one you actually have with you