I don't agree.

I am a mac and (former, except for the 770, of course) Linux user.

When I buy a device, I make sure it works with a mac, else I don't buy. I bought the 770 because it worked with my mac. If Nokia drops support, I'll feel cheated.

Besides, I am perfectly content with flasher.macosx I don't need more of an application to simply upload bytes to the 770. What I find preposterous is that windows users need to install bloats like the .net framework, just to be able to upload silly bytes via usb. That is where the real problem lies in my opinion.

If you keep things simple, then you can support many operating systems. Just a little command line flasher, and make sure it compiles easilly so that anyone interested can port it. That's the way to do it.