[Amasuriel]

It’s certainly possible they don’t care, or they don’t know how to write good code.

Another possible reason could be that they know it’s temporary. A lot of startup code gets rewritten at least once in the first 5 years, there is some art to knowing what code might stick around and be worth the effort to do well, and what you should just bang out fast and move on.

It sounds like it’s possible you haven’t been able to have a conversation with your colleagues about their choices, which might be worth having candidly if you can find the opportunity to do so. If it is ignorance or negligence better to know and decide how you want to proceed if that makes sense.