Bitcoin never ceases to amaze me how people can understand 90% of how it works, what it's for etc but it takes the last 10% to turn them from someone who owns n

Bitcoin never ceases to amaze me how people can understand 90% of how it works, what it's for etc but it takes the last 10% to turn them from someone who owns none, to someone who is all in. I wonder if this guy filled in the remaining 10% of his knowledge over the last decade?