I can think of several multi-billion-dollar customers that schedule their product releases to the day, quarters in advance, with untold advertising / validation

I can think of several multi-billion-dollar customers that schedule their product releases to the day, quarters in advance, with untold advertising / validation / manufacturing commitments on the line. If your prototype isn't on their doorstep ON THE DAY that you promised, a competitor is selected to take your place. NO BULLSHITTING AROUND. MAKE A SCHEDULE, ACCOUNT FOR THE RISKS, AND EXECUTE. I can't believe this blog post is even allowed to exist.