Yup, staring at exactly same situation this year when I dewinterized. Almost certain that valve from bottom of hot water heater is bad. It's still closed even though handle shows open. Tank fills but no hot water from faucets. Opening middle valve allows water to flow.
2012 JayFlight 32TSBH (Elite, Thermal, Tech Packages, Power Awning)
2009 Ford F-150 SuperCrew Platinum 5.4L V8/3.73 Limited Slip, 6.5' Bed, Max Tow, and Integrated Brake Controller