Why would simple Earth Plantation/Vineyard owners (Picards Parents) stop everything they were doing and change their plans because Vulcan was destroyed? It would have nothing to do with them, they weren't Starfleet, they have a Plantation/Vineyard on Earth. Did everyone in California stop everything they were doing and change all their plans and their whole life because of Hurricaine of Katrina devastating New Orleans? No. Sure some ran straight off to New Orleans to help out, but, most just went on about their business. The destruction of Vulcan would be nothing more than a passing thought, if that, for a Plantation/Vineyard owner
While the Picard vineyard and Picard family may not have been directly affected by the destruction of Vulcan, certainly an attack from a Romulan mining vessel on Earth, even in San Francisco thousands of miles from Chateau Picard, would have been a sufficient event to cause a number of butterfly effects to spring up.
What I want to know is -- what happens if NuKirk slingshots the NuEnterprise back to 1969 and beams over to the TOS Enterprise just before they slingshot back to the 23rd century?
Or what if NuChekov beams Captain Christopher out of his plane before the TOS Enterprise does? .. Or say NuEnterprise slingshots around the sun and arrives at April 5, 2063 and NuKirk beams to the E-E before they head back to the 24th century?
Can he jump timelines?