There was an excellent post here on HN that unfortunately went unnoticed. I highly recommend reading it as it exactly points out this problem: understanding.
Here is the link: https://news.ycombinator.com/item?id=50128468
So, if you want to speed things up with LLMs, the bulk of the speed comes from reducing learning.
But it very often feels like brute forcing the solution, and I'm not a big fan of it.
But maybe I'm using it wrong.