Not that I particularly mind this bundle, but note that the two previous "Android" bundles were also available on other platforms. It's just that they were also available on Android and they focused on that.
You got all four (OS X/Linux/Android/Windows) platforms where they were available (might be for all games; I haven't checked). This is my purchase page: http://i.imgur.com/IN58e.png
Do you support open, DRM-free software? Skip this release and wait for Humble Indie Bundle 7, like they suggest on the landing page.
Are you worried Humble is losing their platform-agnostic magic? Well, they've released two Android-only bundles before.
Do you want to hook up indie devs? Their games are still available on Steam, XBLA, or Kickstarter.
If you're against these releases, why not sit this one out? There will be another indie bundle soon enough.
EDIT: forgot one. Are you really concerned about the social good? Well, the EFF and Child's Play always accept donations on their websites:
http://www.childsplaycharity.org/
http://www.eff.org/