You can get a surprising amount done when you aren’t spending 90% of your time fighting fires and playing whack-a-mole with bugs.
I'm not saying the principles themselves are poor, but I don't think they're suitable for a commercial environment.
But ofc, I understand styleguides are... well.. guides. Not law.
I think the point is well made though. When you're building something like a transactions database, the margin for error is rather low.
The real joy of having coding standards, is that it sets a good baseline when training junior programmers. These are the minimum things you need to know about good coding practice before we start training you up to be a real programmer.
If you are anything other than a junior programmer, and have a problem with it, I would not hire you.