This is being addressed right now on the main thread regarding this matter. A RazerCult popped in there and provided this link
regarding Synapse 2.0
Synapse 2.0 works OFFLINE
One of the biggest misunderstandings is the equation of Synapse 2.0 to always-on DRM. It’s a popular notion that anything requiring a login has DRM included in it, and this misconception is one that easily gets the community fired up. In this case however, it’s incorrect.
Once registered, Synapse 2.0 works offline and never needs to be online again. So basically, a user creates an account, saves initial settings, and if there’s no internet connection, it doesn’t matter - settings are saved on the client PC and are not synced to the cloud. Synapse 2.0 works offline.
We understand that this still might be confusing. We will continue to take steps to clarify and to ensure that our users have the correct information (see below).
Edited to add since I'm still the last post:
There are many games and products that require registration sign up or product keys in order to play or use a product and this I could live with because I already do with many different accounts. At least now the option exist to do it offline afterward.
The current products coming out by Razer Ouroboros and Taipei are solid mice from the reviews and shouldn't be held back by software. I'm glad we got the response we were looking for regarding at the very least the 'option'.