A somewhat poorly structured piece; just reading the first and last paragraphs of each section shows a more train of thought article than a strict call to reason.

That being said however there is one important take away from this article for employees (or prospective employees, or sometimes even pre series A investors) because of stock restrictions and the nasty valuation overhang; a big valuation can possibly mean a big correction which can wipe out large chunks (if not all) of your stock options or grants. A double whammy if you've already paid tax on it (countries other than the US can vary significantly on this point).