Not sudden at all MM, and only brought to the table because of continued sniping that critics of '54 don't understand what they're talking about.
If I read SS correctly he mapped out the differences between the definition and what happens currently under the folk banner. It's pleasing to see you also believe 1954 isn't as comprehensive as it's often imagined, some on Mudcat present it as an article of faith - the minimum requirement to ascended master enlightenment and a line between 'us' and 'them'.

We all draw our lines where we will. My preference is for acoustic music, preferably with traditional instruments (though I won't leave in a huff if there's a guitar) with a strong tendency towards the tradition - while being aware how arbitrary both the music and the preference are.

Since arriving here I'm impatient with those who can't - or more often won't - see the flaws in the definition and flit between patrician putdowns and earthy reprimands without addressing the criticisms.