It's a good study. I also believe it is not an easy skill to learn. I would not say I have 10x output but easily 20%

When I was early in use of it I would say I sped up 4x but now after using it heavily for a long time some days it's 20% other days -20%

It's a very difficuly technology to know when you're one or the other.

The real thing to note is when you "feel" lazy and using AI you are almost certainly in the -20% category. I've had days of not thinking and I have to revert all the code from that day because AI jacked it up so much.

To get that speed up you need to be truly focused 100% or risk death by a thousand cuts.