And why do you agree?
One of the differences between professionals and other workers is that professionals are experts in how to do their work. If I tell my doctor to just write me a prescription because I said so, she'll just scoff. I can make requests, but she decides what will happen and how.
Especially if you're already likely to quit this job, then you don't have much to lose by insisting on using best practices. Sure, you have to honor their desire to do things reasonably quickly. But you don't have to keep digging the hole deeper if you feel it is professionally negligent to do so.