While there are certain a subset of developers who lack the ability to write solid code, more often they aren't given the opportunity to do so. Too often company deadlines, resource shortages and selling prototypes as complete products boxes in the developer teams. Product and sales want constant new features and most companies don't enable a culture of investing in the product with refactoring and reviews and other best practices. Developers are seen as a cost center not the critical cog in the machine. If you fix this, you will get better quality code.
I see this as well - in a lot of ways, it's an (accidental?) outcome of JIRA-driven project management. The project manager's job is to squeeze as much productivity out of the developers as possible, so they do so by having you account for every hour you plan to spend and what you're going to spend it on. Then they start looking at what can be cut, and the stuff that's not "mission critical" gets cut. What's frustrating is that this ends up being a Pyrrhic victory.
