> So like, Clean Code really does say you should write four line functions, and does not put caveats on that statement

This is false. I tried to look this up a few weeks ago, there is no number. The book says (close paraphrase) "functions should be short, and then they should be even shorter than that". It also says, "a function should be only so long that it expresses a single cohesive idea"

There is lot of nuance and wiggle room there, and those are not absolutist statements. Reasonable people can disagree whether small talk length functions are good or not, but the characterization of an absolute line limit is false.