[pdpi]

There’s the occasional engineer who works this way, but I find it exceedingly rare.

A much more common pattern (though still not that common) is the mentality that they’re focused on high impact work, and documentation isn’t it. Selfish, maybe, but not outright malicious.

An even more common scenario (that covers the vast majority of cases in my experience) is an internal culture that values shipping above all else, and makes engineers feel harried. Even if documentation would reduce busywork and improve productivity long term, management is too focused on the short term challenges to see it.

[xupybd]

That's it extremely tight deadlines and no time given to document anything.