I'll keep it as short as possible. Dev promised support for Mac and Linux, changed their mind, and didn't offer refunds when requested (outright ignored messages). You've had a great launch, and the two communities you ditched are relatively small as to minimally change your bottom line. You could have done the right thing and refunded the game. I'm disappointed in the Dev for not working with backers who supported your work and for grossly misunderstanding the social contract aspect of kickstarter (yes, devs are to blame as much as backers here), and I'm disappointed in the gamers who turn a blind eye to this behavior.
