For personal projects, 10x is a lower bound. This year alone I got several projects done that had been on my mind for years.

The baseline isn't what it would have taken had I set aside time to do it.[1] The baseline is reality. I'm easily getting 10x more projects done than in the past.

For work, I totally agree with you.

[1] Although it's often true even in this case. My first such project was done in 15 minutes. Conceptually it was an easy project. Had I known all the libraries, etc out would have taken about an hour. But I didn't, and the research alone would have taken hours.

And most of the knowledge acquired from that research would likely be useless.