All of Razer's products are like that. I've been boycotting them since their keyboard wanted me to sign in to use my function keys.
Truer words have never been spoken. It's a crying shame that "caveat emptor" has become so thoroughly ingrained in the tech scene. More and more, I see some gizmo that seems interesting, take a deeper look, and run away screaming when I find out what a crawling horror it really is.
The users are just fanatically tolerating Synapse 3 and are still giving Razer their money. Until they stop, this kind of stuff will continue to happen.
Does the Roccat software even require registration, or it's just bloated because that's all they could do?
I'd even say Razer wins on assholery.