I also did this as well as learned pfSense then OPNSense when pfSense went bad. Also made a pretty complicated XCP-ng setup. Learned all this with the ancient ChatGPT 3.5-4.0 models.

I can hear a subset of people cringe saying "but LLMs are BS machines and you aren't learning anything!" I heartily disagree on both fronts. The main thing holding users like me back from linux was always the snarky RTFM community and the fact that everything has 25 different answers (depending on distro, window manager, and many other factors). LLMs take care of all this friction for you very nicely.