That's not how I read it...more like "watching a movie about facebook and building my hopes and dreams on this being me in x years" is what you should avoid.

FB/GOOG/etc are the very rare outliers. Don't hedge your business (or mental-wellbeing) on the expectation to replicate their success.

It's good to have high ambitions but have a plan B & don't expect to be the unicorn. It would be analogous to starting a band in the hopes of becoming the next Beatles.

Facebook has had major ethical issues every step of the way and Mark himself has made some serious mistakes over the last year or two. Plus, arguably the most innovative part of Facebook was the go-to-market strategy.