I've seen the result of "code doesn't matter" and it's difficult to change and maintain. I guess if your business is ok with frequent P1 incidents or ships a complete product and never touches it again, but I've never been part of one. I've also never been in a position that cared about leetcode or remembering APIs, so it's possible my experience is completely different from yours.

ah, but if there are incidents then the product is faulty. by "code doesn't matter" I mean exactly that we don't care what's under the hood as long as it runs. code with "good enough" quality delivered in a week is most often preferable to premium quality code delivered in a month, and even "it's ugly, slow, and there are edge cases when it breaks"-quality code hacked together during the lunch break is often sufficient for the product to function.