Maybe this is the reason for the ubiquity of over-engineering and other patterns of over-complication - quite a few people enjoy deep work, but the vast majority of jobs in software development, or writing, or even a fair few in science, turn out to be only hard work when done with optimal efficiency.
The first time I saw this pattern was with a place that used their master database as the central integration point for a lot of different code bases. They could have simplified things greatly, but that would have required multiple teams to simultaneously change how they used particular tables in their code. The database was controlled by a central group of database administrators who were very busy and had different incentives than the teams they supported. Getting all these people on board for a change was possible only if it rose to an executive level. Which if it could be achieved at all, required lots of politicking.
So in practice, every team had to make up for the garbage architecture through hard work. Which however much they meant well, tended to reinforce the problems.
We use ant with a lib-folder - worked on maven in my spare time - nobody cares. Worked on automated tests - nobody is willing to discuss this or do the required changes like fixing Angular timeouts and assigning some unqiue-id's to elements that tests don't break. We misuse the API from the parent project we are building a plugin for - some calls take 3s or more instead of feasible 100ms if correctly implemented. We have a useless PHP addon that constantly breaks for "performance" but it's slower than doing it in Java correctly. Brought all of this up. It's not even a topic.
People who study the Challenger accident talk about "normalization of deviance". When things are bad once, people react. But if they're bad regularly, people just get used to it. Bad is the new normal. And that's very hard to change.
I think the only times I've seen significant progress had 2 common elements. One is a fucking disaster. Something has to blow up so badly that the grand poobahs feel the pain, and make sure everybody beneath them does too. The other is a bubble of sanity. Maybe it's one team that has a few people like you, enough to say, "Well in this team, for this product, we're going to do it fucking right." And then that team has to show that doing it right produces great results, results that prevent the fucking disaster from ever happening again.
So for your sake, I hope you either change your organization or change your organization. You deserve better.
Deep work has nothing to do with over-engineering and everything to do with non-distracted focused time doing something that actually releases dopamine and feels good.
Deep != complex
When I think back to the times I was putting in a lot of extra hours, I wasn't getting results in proportion to the time spent. Partly because being tired your capacity declines. Partly because, in retrospect, we were all performing hard work as a way of impressing clients, bosses, and each other. And partly out of some phenomenon related to "revenge bedtime procrastination" [1] where I just ran out of self-discipline and would secretly take the breaks I should have been taking anyhow.
Some years back I hired movers. Previously my experience moving had been the casual thing with friends and family. We took our time, joked around, took breaks, kept entertained. But these movers were relentless. They never rushed and never seemed stressed, but if there was work to do they were on it until the work was 100% done. And when there wasn't work to do, they were perfectly chill.
I keep coming back to the memory as how I want to work. No bullshit, hard work when it's time to work, and really letting go of it at quitting time. It's harder to achieve for software, but I will keep iterating in that direction.
[1] https://www.bbc.com/worklife/article/20201123-the-psychology...
That only works because their job is perfectly defined. The scope is finite and always in sight. I'm not quite convinced this would work for creative work or a project that's somewhat open-ended in features and/or scope.
To give an example of this: I can do this type of no-bullshit relentless work when I exercise in a gym. 1.5hrs of a strict routine with a fixed number of reps. And a hard stop after that.
Never found the same type of ability for deep work.
We managed that here: https://williampietri.com/writing/2015/the-big-board/
And that's despite the fact that it was a startup. It helped that my cofounder had 3 kids under the age of 5. He came in on time and he left on time. We all busted ass while we were there, but when we left, we mostly left. One real test for me was when I had to take weeks off to help a sick relative. Even though I was the technical cofounder and had been involved in every bit of the code, I got maybe two calls where they really needed me. It was a sign that we're built a real cross-functional team.
This is the key, I think.
It's driving a truck vs. delivering goods.
Laying stones vs. building a house.
Answering emails vs. solving the problem.