If a protocol is getting implemented wrong repeatedly and independently, what is the value in it being nominally "nice and simple"? You might not be understand

If a protocol is getting implemented wrong repeatedly and independently, what is the value in it being nominally "nice and simple"? You might not be understanding just how complex the H1.1 feature set really is, and how how much fragility comes from that complexity needing to be retrofit to a too-simple design later.