"So I was thinking about #####'s Law this morning, and I realized that #######'s Theorem might apply if we do this and ignore that. Then I went up a blind alley and stopped for coffee and realized I was overcomplicating it, we don't care about negative or imaginary solutions."

They don't need to know I was brushing my teeth and thinking of bacon and an argument I had with my spouse right before I thought that though. Or how rude the customer in front of me was to the new barista who was just trying her best.

Ugh, let's take a step back and make a distinction:

I don't need your fluff. No one cares how you arrived writing another crud line to save an object to database or sent yet another AJAX call.

If you wrote some genuine great compression algorithm that's a different take on compression, I would like to see step by step reasoning and eventual dead ends.

I personally stumble upon many topics where I only care about the what. In that case all the theory is just a distraction I'm just wading through to get to the point. If it's optional, then looking into the how and why is certainly nice, but it should be part of an appendix or a commentary and not interspersed within the proof unless an uncommented version exists.

OTOH polishing up the presentation can really improve the experience of a first-time reader of the work (e.g. your code reviewers). If the polishing is done with good intent and proficiency you can make something that was very convoluted and difficult to arrive at digestible with far less effort. It also aids your own understanding: "If we can reduce it to the freshman level that means we really understand it" (or similar I didn't look up the exact quote, attributed to Feynman). If you're polishing something up to make it understandable that's totally different than polishing it up to make yourself seem smart, right?