Finding the golden middle ground between 'move fast and break things' and 'move slow and fix things' is difficult and as the stakes get higher it's only natural to favour slow, steady, and careful over flying by the seat of your pants.
Exactly!
You want the surgeon who took the time to study deeply, then went into practice doing as many surgeries as possible, but then also taking the time to review/debrief/analyze the process and results. So, yes, it is a real mix or "golden middle ground" with excursions to both extremes. The opposite of a one-size-fits-all approach to each step.
As the stakes get higher you have to slow down, but imho the right takeaway from that is that you need to find low-stakes environments where you can move fast, in addition to whatever high-stakes environment you have
So yeah, it's always better to have lots of experience, and moving fast is indeed great for quickly acquiring experience, But in some fields and situations you can't afford to move fast, you just have to spend the necessary years.
Writing is a much better example - many great writers talk about how they write all the time, every day, but very little of it gets successfully published. But the practice gives them good experience.
(Including the cancelled interventions when the surgeon recognized that surgery was not required.)