I think the desire to get immediate answers to your current problem, as opposed to developing a broader understanding of the tools you're working with, is part of what led to the LLM chatbot brainrot we're seeing these days.
And I think practicing the skill of actually reading the manual start-to-finish removes some of that temptation, makes you less prone to being misled by some LLM, and is a tiny step towards making those AI companies have less power over people.