It gave me pause in the sense that it doesn't feel true.

I mean, yes, I've had to look things up to see how to do things in Linux. I've also had to do that on MacOS. (Just the other day, I couldn't remember what the Task Manager-equivalent on MacOS was, and nothing I typed into the launcher was coming up with an appropriate app, so I had to ask the robot what it was named.)

But dozens of hours? Maybe back in the Red Hat 4.2 days, but not now. Some of that is obviously just that I have a lot of knowledge about things, but even so.