At an individual level, I think it is for some people. Opus/Sonnet 4.5 can tackle pretty much any ticket I throw at it on a system I've worked on for nearly a decade. Struggles quite a bit with design, but I'm shit at that anyway.

It's much faster for me to just start with an agent, and I often don't have to write a line of code. YMMV.

Sonnet 3.7 wasn't quite at this level, but we are now. You still have to know what you're doing mind you and there's a lot of ceremony in tweaking workflows, much like it had been for editors. It's not much different than instructing juniors.