alt Hacker NewsTwo points. First of all, yes I would. There's a reason we use existing tools and don't have every junior programmer write a TGA viewer when they want to view an image that is sent to them.
Secondly, I used time as a proxy for cost. A single junior can "only" spend their own 15 minutes, but an agent can farm out to N subagents to do the work in 15 minutes, and spend $3000 in tokens building something. As you said, scale matters, so if they do this once a day for a month, it costs the same as paying 12 juniors to avoid asking a single question.
There used to be a time when you had to write in assembly and count bytes to fit your code into the vanishingly small ROM you had available.
Nowadays, you can just write in python with no care for the hundreds of thousands of cycles and megabytes of memory you are wasting.
All indications today point towards the same happening with the cost of intelligence.