One day you will inherit a code base so bad that you’ll end up commenting old code

Will not be the case, I won't take a job, where I have this situation (or I'll quit pretty quickly)...

Yeah my "comment standards" (btw. as others mentioned here, I was unprecise/unlucky with the choice of words, I meant "comment the why" or doc-comments totally fine and should be aimed)

Your so called comment standards and principals are fine if you are building something from the ground up

Yes that was also targeted with my comment. But what you're referring to is just missing documentation, and I think this should be done on a higher level. The "comment why" rule applies for spaghetti code non-the-less...