So it is a seperate continuity from classic trek and invalidates the past of trek as well as treks future i.e. the next generation.

The burden falls upon you to explain how.

What I saw happen was that the elder Spock was, as a result of the confrontation during the TOS timeline, transported into a new timeline, an alternate universe. It can't be the exact same timeline because Vulcan is destroyed - but we all saw in the OS movies that Vulcan is very much intact. How can Spock undergo Fal-Tor-Pan in The Search For Spock in the JJ Trek future if Vulcan is destroyed? All those scenes with Spock and his mother from STIV? Will not happen in this timeline - but they've already happened in the timeline the elder Spock once occupied. What else happened in that timeline? TNG.

Spock goes it alone because his jellyfish ship is the only ship that can intercept nero, hogwash. Sounds like lazy storytelling to me.

Hmmm...I guess the Merrimac or the Monitor can take out any WWII era submarine by your logic. That giant Romulan ship chewed up Federation ships of that era - it seems logical that it would take a contemporary ship to fight it.