> just want to point out that maintaining a knife is a whole hobby that requires a time investment of learning the skill and storage of additional tools and material.

You're right that's a hobby. But the hobby's definition of "proper maintenance" and what it "requires" is basically just people nerding out about things that don't matter the slightest in the real world.

To maintain a kitchen knife so that it cuts a tomato without squishing it, you don't need a book on knife science. Further, that nerdery is probably actively harmful, because instead of simple solutions, people are told they need an inspection microscope and a variety of jigs and other implements. So they buy an objectively bad electric sharpener and move on.