Why are we worried that Rikk is changing history?

[Ray Radlein]

We've already seen the Antietam battle plans vaporized, Abe Lincoln shot at in the street, and a weapon of terrible power delivered into the hands of the Army of Northern Virginia.

Face it -- we've already seen more than enough changes to create a new timeline. Rikk's actions do nothing more in that regard.

The only remaining topic for debate is what shape those changes will take, and what shape they should take.