similar experience here, I don't think I've run into a challenging problem that I've had to solve directly for months

I've been a developer for 25 years

For me it's mostly dealing with humans and bureaucracy now that takes the most time. Actually kicking off an LLM will often (though not always) get me in the ballpark of the right solution, and then iterating with the LLM from there gets me the rest of the way.