A nice bonus is that sysadmin tasks tend to be light in terms of token usage, that’s very convenient given the increasingly strict usage limits these days.
By this point? Absolutely. They still get stuck in rabbit holes and go down the wrong path sometimes, so it's not fully fire and forget, but if you aren't taking advantage of LLMs to perform generic sysadmin drudgery, you're wasting your time that could be better spent elsewhere.