If you don't ever have a massive PR from a dynamite session, then you cannot ever be better than "average and plodding". So the question is, what's the context of the massive PR and how should it be handled?
* Mature product making money, intermediate engineer just refactored everything so it's "better"? Shut the fuck up, kindly please, you will have to demonstrate that you understand why things are this way and why it's better before we even have this conversation.
* Greenfield dev, trusted engineer getting from 0 -> 1 on something big? Maybe it shouldn't be held up in committee for 2 weeks. Maybe most objections will be superficial stylistic concerns.
Obviously there are many other contexts and these are 2 extremes in a multi-dimensional space. But if the process is "we litigate every line", then that's just not an innovative place to be. Yes, most PRs should be small, targeted, easy to review and tied to a ticket but if you're innovating? By definition it's a little different.