SolarMech

Takes time to become ubiquitous.

Learning to deal with "unmaintanable" codebases is a pretty good skill. It taught me good documentation and refactoring manners. It's only a problem for you if management does not accept that their velocity has gone down as a result of tech debt pilling up.

Code should scream it's intent (business-wise) so as to be self-documenting as much as possible As much as possible is not 100%, so add comments when needed. Comments should be assumed to be relevant when written, at best. Git comment should be linked to your work ticket so that we can figure out why the hell you would do that, when looking at the code file itself. I swear some people seem to think we only read them in PRs (we don't). Overall concepts used everyday, if they need to be reexplained, should probably be written down (at least today's version). Tests are documentation. Often the only up to date one?

Git wasn't used all that much in the 2000s. As far as I know it became popular in the 2010s (though it was always a thing in some circles I think) and then just supplanted almost everything else.

Also keep in mind some shops tend to follow larger tech companies (microsoft, etc.) and their product offering. So even new products might not have been on git until MS went in that direction.

Generally, you can replace some comments with variable names or comment names. Which means you must already be in the habbit of extracting methods, setting new variables to use appropriate names, and limit context to reduce the name (Smaller classes and methods means shorter names can be just as expressive, because the context is clearer). It lowers the number of wtfs per minute you get reading code before you even need whole sentences to explain why things are done in a certain way, because the names can be a powerful hint.

But realistically, you end up needing comments for some things anyways.