I'd say that a correct aspect ratio is part of the baseline for authenticity - nothing 'super' about it. But we clearly live in a world where most people don't see a dang thing wrong with 4:3 content smeared all the way across their widescreen TVs, so admittedly I'm the odd man out. :)

A better approach would be to derive the ratio from known signal timings, and from comparisons to actual monitor output (or photos of such) where applicable, rather than subjective judgment calls about how particular games look... but any attention being paid to this stuff at all is a good thing.

What more people need to be aware of is how to properly aspect-correct their retro gaming video footage for uploading and streaming...