This is only true for founders who had inherent ownership in the company to start with. Your average dev getting comp'd with RSUs is taxed the same as if that was straight income.
i.e. people who took all the risk when nothing existed.
Ok. I don't mind those folks getting large rewards. I do mind when they effectively pay far lower taxes than the common man. You take out a loan on assets? It should be treated the same as if you sold and took capital gains. Capital gains should be taxed as normal income above $medianHouseholdIncome.