Maybe? I don't recall them suggesting that it should be replaced every few decades.
Worth pointing out that there is a process in the constitution for changing the constitution, but there is no process for replacing the entire document. So I'd say there is pretty obvious intent for the document to change/evolve over time.
Hypothetically, we could amend the constitution to have a process for replacing the whole document though.
Just to go full circle on their dumbfuckery, I'd bet that they'll start advocating for the school to pay to have him transition against his will so his outward appearance will match his birth cert.