Linus Torvalds quite deliberately chose to go with version 2 of the GNU GPL, and not any other version. Certainly not "any later version, as published by the Free Software Foundation".
It'd be a funny old world if this matter ended up in court and the judge accepted RMS as an expert witness to expound upon the rationale behind the GNU GPL, while refusing to hear from Linus Torvalds, the leading copyright holder in the work in question.
(N.B., for all I know, Linus is 100% cool with Red Hat's move. If the TiVo lockdown didn't bother him, I don't know what would.)