I don’t see that analogy working. People, like @iacas, who use GEARS to obtain information are hardly average people in the golf world. No one suggested average people should run out and get a GEARS system for themselves. It’s a suggestion that fitters may be interested in this information in regards to lie angles and how they’re currently measured.
Not saying the "average person" is buying the GEARS set up, the average person buys access to the technology that otherwise would be unavailable to them.
Here's an experiment. Go check the lie angle question that started this thread using GEARS, and then cross check those results with the sharpie check. See how the results compare.
Interesting discussion. I’m not a good player by any stretch, but I do tend to pull my shorter clubs more often than my longer ones. I can’t remember the last time I pulled a well struck 4i, now that I think about it.