The Vulcan High Command had immediately ordered the Cybermen Destruction after learning about them and 'Blasting the Cybermen Base apart' to make sure the things are really gone!

The Torchwood Planetary Shipyard taken over by the Cybermen on the Planet Earth was destroyed by the Vulcan Armada and thousands of Vulcan Starships had swarmed the Sol System to make sure the Cybermen are gone!

Starfleet Command had never seen the Vulcans bring thousands of starships to the Planet Earth beforehand and Humanity had been saved from the Cybermen because of it!

A Crashed Cyber-Warship was found and the rest of the Cybermen hidden on the Planet Earth are hunted down by the Vulcans afterwards as the Torchwood Humans Rebuild their Planetary Shipyard.

Torchwood's DY-100 Class Starships would Colonize several new worlds for the Torchwood Empire to explore the universe on their own without Starfleet getting in their way of dealing with it themselves, at least that was their long-term plans for leaving the Planet Earth to start over again.

The NX Class Starships are the first real interstellar craft made by Humanity and it was finally time for the Torchwood Empire to leave behind the Planet Earth for Starfleet Command to 'Defend Humanity' by themselves to avoid the Political Problems between them in the future regardless.