One reason I switched to the cheapest notebooks and cheapest (reasonable) pens is a feeling that I was attempting to live a simulacrum of productivity bathed in nostalgia for an era I never lived in, and which probably never existed.
There's a vision I am still somewhat attracted to of illuminating notes into a handcrafted moleskin (or whatever) journal and in doing so, creating an artifact that has value across all dimensions. This intention, whether it sits on the surface of my subconscious or just below it, detracts from the thing of value: what's being written.
What really changed my perspective was attempting to write seriously. The first draft of a long form work is the bare minimum to begin writing. Writing does not really begin until it exists. When I tried to adopt this into the notes I made in my professional life what I found is that, in general, I didn't really need much of the notes anyway.