Except that how do we know that the Prime universe doesn't vanish from the memory of the multiverse immediately after the Narada and the Jellyfish are swallowed by the red matter singularity?
Orci & Kurtzman showed us that the 24th century Prime Universe remains undisturbed
before "Star Trek" (2009) was even released. In IDW's "Countdown" #4, Captain Data, Ambassador Picard and an injured Worf are seen conversing long after Spock's and Nero's vessels have entered the singularity.
And, in interviews, Orci repeated said, "Think Parallels