I don't know why the author thinks that Raw Therapee can't process JPEGs or TIFFs. Just go into the preferences screen, uncheck "Show only RAW files", and you're set.
As for artificial limitations on development:
According to a developer I talked to who apparently worked on the iPhone, it will have secure boot; i.e., the bootloader checks to make sure it's booting Apple's OS, and the hardware won't run any bootloader other than Apple's. Obviously Apple is taking a different approach this time compared to, say, the iPod and their Intel Macs. So, I doubt we'll be seeing iPhone Linux or anything like that unless Apple has done something really stupid.
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I don't know why the author thinks that Raw Therapee can't process JPEGs or TIFFs. Just go into the preferences screen, uncheck "Show only RAW files", and you're set.
Also missing from the comparison: Rawstudio and UFRaw.
If you're interested in RAW processing on Linux, there's an excellent blog called Linux Photography about this very subject.
As for artificial limitations on development: According to a developer I talked to who apparently worked on the iPhone, it will have secure boot; i.e., the bootloader checks to make sure it's booting Apple's OS, and the hardware won't run any bootloader other than Apple's. Obviously Apple is taking a different approach this time compared to, say, the iPod and their Intel Macs. So, I doubt we'll be seeing iPhone Linux or anything like that unless Apple has done something really stupid.