This is 100% true. If you have ever watched ntpd ignore a stratum 0 clock (and every other time source) because some stratum 6 device reports the wrong time, yo

This is 100% true. If you have ever watched ntpd ignore a stratum 0 clock (and every other time source) because some stratum 6 device reports the wrong time, you know the pain. Yes, this isn't supposed to happen, and yes it has happened to me many times.