I think some of the cogent points made were

Just because something is in an RFC and recognized or accepted RFC does not
mean it's been established

Ancient rfcs can age out into abandoned protocols

I got the distinct impression now and I think it's reasonable flash
priority is an abandoned protocol

I will stay with firstnet and the engineers there to make sure I have
reliable communication in the event of an Internet emergency so that I can
do what I do best which is help other people and I thank you all for
helping me with this issue.