10% is a lot of hacker ethos. Few take shits on toilets they made themselves all the time. Few make their own mattress or intentionally hack their brainwaves with external and/or internal devices when they sleep. And very few are consuming soylent regularly. You could have written your own email client, browser, and you could be writing code on a CPU you designed yourself, just to avoid the day-to-day grunge of unhackerness. I could have spent the time that I wrote this to instead take apart an old cordless phone to make it a garage door opener, just to have a spare. The car I drive could be one of a kind. It shouldn't even be called "car", because it would be different and better suited for the task of getting me from point A to B, freeing my hands to hack something together while I'm traveling.
Yes, 10% is what was meant, even if it was unintentional.