From the Razer Synapse TOS agreement:
I don't own a tin foil hat but, that seems rather vague/excessive for simply being able to use your mouse....
Don't see how that has anything to do with cloud storage. Well, maybe it could be they are looking at user mouse profiles to see how they can streamline their own out-of-the-box profiles but, that seems pretty lame imo.
@Degree, Yeah that LAN access makes sense.