Depending on how you count, I have somewhere around 30Y of paid coding experience. It took me until maybe 5 years ago to have discovered this for myself.

One thing I've noticed, though, is that if you create a culture around this, you'd must have guide rails in place. Otherwise, in the wrong company, or people will use the culture to present shoddy work with the expectation that other (senior or not) developers will challenge. These people exploit the culture by using shoddy implementations and challenges to offload hard parts of their projects. This is the mirror image of the illegitimate questions: illegitimate claims.

As a senior engineer, you should ALWAYS be willing to lead from the front with code deliverables, but your review-to-code ratio is so skewed that the number of times you can satisfy that kind of challenge is low compared to the number of times when you might offer (sometimes negative) input.