Wow, good stuff, Archimedes, good stuff. You don't, by any chance, write Ministerial Answers as a side line? (joke).
But, this time with pedants head on, Galley Teapot's original post framed the question Which is the oldest RAF squadron? (my bold). Not RE, RNAS or RFC but RAF. And as the RAF formed on the 1st of April 1918, I stand by my original submission.
I would certainly throw that submission into the answer pot in Galley's pub and then step back and watch the ensuing bar fight!!
Regards