Then you have issue with reading comprehension. The whole point of the discussion was this:

"The time to do this was about a decade ago. Apps, open formats, open USB protocols, open wifi / bluetooth protocols, and semi-open firmware (with a few proprietary blobs for color processing, likely) would have led things down a very different trajectory."

And the rest of your posts also misquote what I said and, ironically, just as often, what you said. There are also minor technical errors: diffraction limits are basic physics. It's a simple relationship between (a) the radius of the circle of confusion (in units of angle); (2) the frequency of light (in linear units, typically nanometers); and (3) the radius of the aperture (in linear units, typically mm). There is no voodoo with "sensor size, pixel pitch, and the lens optics." Most of your post is taking statements like a basic rule-of-thumb of what you need for decent photos and exaggerating to statements like "diffraction doesn't affect sharpness." Of course it's easy to beat up a statement if you misquote it. That's called a strawman.

So I think I'm done here. Give me your downvote, and I'll argue somewhere else.

> misquote what I said and, ironically, just as often, what you said.

I haven't misquoted you, or myself, at all. Your original complaint was around the need for adapters and additional cables. I never even mentioned UVC in my reply, and you are now rejecting my clarification that you can do USB video (yes, with a driver not UVC) on pretty much any modern mirrorless camera.

Diffraction limits of the optics /alone/ are not the only thing that affects sharpness as it relates to aperture, which is why I pointed out the impact of stopping down on light gathering, and light gathering is most certainly affected by sensor surface area and pixel pitch. Additionally, as I pointed out sensor size also affects the diffraction limit because sensor size influences the size of the circle of confusion. I don't think either one of us has any misunderstanding of the basic physics of light in a digital camera, you're just being obtuse.

We cannot downvote each other because the system prevents it since we're replying. I wouldn't downvote you anyway, I don't consider a downvote to be a form of disagreement, nor an upvote a form of agreement. Even though I don't think you're interacting with me in good faith, you have made valuable contributions to the conversation for a 3rd party reader to learn more, and that's good enough that I upvoted your replies to me even while I disagree.