"Equity is worthless, never work for equity, always demand cash up front."
"Those darn investors and founders keep all the equity for themselves and get rich off your back!"
You can't have it both ways. Either the equity is worthless or it isn't. Are the investors, who get no salary and only equity, even bigger suckers than the employees? What about the founders who usually take big paycuts when they start the company?
It seems like the real message here is "Make sure you get a BUNCH of equity" not "Don't take any equity at all". Which I can totally get behind. If you're an early employee at a startup, working for equity, make sure you're being compensated appropriately!