The thing is, people have certain expectations of a Humble Bundle now; that's what it means to have a strong brand.
It's fine that they are doing new things -- I don't mind the Amnesia Fortnight stuff at all, in part because it's a pretty cool concept, but probably also because they're not calling it a Humble Bundle.
But this one goes against some of the basic tenets of the Humble Bundle series; namely, the DRM-free, cross-platform nature. One of the reasons I support them is that I support choice. I want to have choice in what platform I run. I want to have choice in what machines I run my games on. DRM and single-platform games mean that I don't have that choice.
All I'm saying is that in the past, I've bought Humble Bundles and never even played a single game, just because I supported the idea so much. Now they've violated some of their core principles; they are still "pay what you want" and allow supporting charities, but they are selling games that I am morally opposed to. I'm better off just giving my money to the charities directly.
The point of Humble Bundles is to make a bunch of cool games available for however much money you want to pay. Sometimes those games are cross-plattform, sometimes not. That’s it.