1) 20 minutes is barely enough time to get into flow.

2) There are different levels of debugging. Are your eyes going to glaze over searching volumes of logs for the needle in a haystack with awk/grep/find? Fire up the LLM immediately; don't wait at all. Do the fixes seem to just be bouncing the bugs around your codebase? There is probably a conceptual fault and you should be thinking and talking to other people rather than an AI.

3) Debugging requires you to do a brain inload of a model of what you are trying to fix and then correct that model gradually with experiments until you isolate the bug. That takes time, discipline and practice. If you never practice, you won't be able to fix the problem when the LLM can't.

4) The LLM will often give you a very, very suboptimal solution when a really good one is right around the corner. However, you have to have the technical knowledge to identify that what the LLM handed you was suboptimal AND know the right magic technical words to push it down the right path. "Bad AI. No biscuit." on every response is NOT enough to make an LLM correct itself properly; it will always try to "correct" itself even if it makes things worse.