Comment by maxloh
Perhaps the FSF got confused about which license the author was referring to, or perhaps they intentionally mailed back GPL v3 — this isn't the first time they haven't been generous.
In the old days when they released GPL v3, Linus Torvalds considered it "not the same license at all". He felt betrayed because the FSF "try to sneak in these new (tivoization) rules and try to force everybody to upgrade". People could fork the Kernel and relicense the fork in a way that prevented him from merging their improvements upstream. He referred to the FSF's move as "dishonest", "sneaky" and "immoral" and decided he would "never have anything to do with the FSF again".
> Perhaps the FSF got confused about which license the author was referring to
When no version is specified in the request, returning the latest version seems like a reasonable thing to do.