IMO it still does save time generally but it’s not as much of a huge gain if you’re doing this.
I will admit there are occasional times after iterating so much I’m not sure if I’ve even saved time because going from “it works” to “it’s up to quality” takes so long
I've run a few experiments where I give it well-defined small side projects where I have a good idea of what I would do and how long it would take, and I time the process from start to finish.
So far, it's been pretty underwhelming--on par or slower, and it's definitely more frustrating lol.
Honestly, the only killer feature I found so far is overcoming ADHD activation energy lol. Getting annoyed with the idiot robot screwing up the Terraform migration is apparently a good way to get me to finish a Terraform migration.