It's not that clear and still involves coding. But as I start coding and modules/APIs/classes take shape, it gets to a point where I say "ok, from here on it's just filling in the blanks".

But filling in the blanks can still involve a lot of grindy, time consuming work where you iterate through collections, build parameters for other APIs, check invariants etc. All of that stuff is boring to me.

What I'm trying to say is that most coding tasks require "senior level thinking" and "intern level thinking". The latter can sometimes be the majority of the work and I don't want to do that anymore.