Lebby, Marcelli, and Siraj have all sold companies and are likely independently wealthy.
Joe Miller, given his work with Corning, is likely in the same boat.
Non of these 4 have sold.
The other guys are only "wealthy" thanks to the foresight of taking stock options over fat ass salaries to work here. Please remember how little these folks earn for their services here
These sales are a non issue and well deserving.
I myself had to sell maybe 3% of my shares this year for various reasons that I'm not going to go into and don't matter. Still have 100k+ shares
Not a single thing wrong with enjoying the fruits of your labor.
Also when you have a million shares, selling at 17 when you think the stock can go to 100 or 500 means less than you think.