Why is it more efficient? Some things are objectively true: a screen is less effective in bright ambient light (especially with direct sun on it), and holding the camera against the head can be more stable, especially with bulkier lenses. But how is using the EVF more efficient? What does that even mean?
"Keepsakes" versus "art" doesn't matter. Art isn't great because it meets technical standards. Of course everyone's standards - both technical and affective - differ; regardless, my point is, if the audience for a camera body (in this hypothetical case, a cheap entry level body without an EVF) is satisfied, then it could be a sensible way for Canon to keep the price low, which is vastly more important to many potential customers than if their composition is "lousy".
PS I treasure photos because of their content, and this is by far the commonest view; as a sometime photography nerd, I also happen to appreciate technical aspects, but that puts me (and you) in the minority. My experience with lay folk is, even explaining what noise, or sharpness, or focus are is difficult and misses the point much of the time.