You are exactly right. I have been following the rework pretty closely because I've been interested in the backlash from the Cass community. I main Swain, and I've never lost in lane harder than to old Cass. That is, until new Cass.
In the middle of all the changes she went through, there was one point where I picked Swain into her because I wanted to see how different it felt. It felt great. As promised, she was weak enough early that I could handle laning against her. Imagine my surprise, a few weeks later, when she trashed me even worse than before with those undodgeable twin fangs.
So, yeah, I came away with "... how is this better than old cass? She is still incredibly strong in lane early and some kind of strange hyper-carry late, so she can snowball her strong laning into an unwinnable game? Sounds like that nightmare HoN game I heard about when I started playing LoL."
And yeah, I haven't had much experience with her, but the experience that I did have with her has been incredibly negative. It seems like she has completely lost direction, and basically functions like a spell dependent adc that does magic damage. I hate to just bash on Stashu constantly, but I can't say I love what he did with her. From the other side of her lane, she feels even worse of a bully, and the cass players don't like her either. Not sure what that leaves us with.