TLS 1.3 was in some part an exercise in removing crap people thought might be a good idea in earlier versions, but then either never used or turned out to be a terrible idea but was notionally "optional" so you could say to keep using TLS but just disable that feature. So there is skepticism pre-existing in that room against the idea of just adding more stuff than might be cool unless it's clearly _needed_.
A feature that keeps six people in Kazakhstan (who happen to have manually pre-configured a PAKE) safe but everybody else is still screwed isn't the sort of impact TLS 1.3 was looking for.
https://youtu.be/mx40DSeoxnw?t=1230
TLS 1.3 was in some part an exercise in removing crap people thought might be a good idea in earlier versions, but then either never used or turned out to be a terrible idea but was notionally "optional" so you could say to keep using TLS but just disable that feature. So there is skepticism pre-existing in that room against the idea of just adding more stuff than might be cool unless it's clearly _needed_.
A feature that keeps six people in Kazakhstan (who happen to have manually pre-configured a PAKE) safe but everybody else is still screwed isn't the sort of impact TLS 1.3 was looking for.