Looks like some mods got confused and thought Troll meant Disagree.
Agreed with the spirit of your open source vs open platform issue. Though, I'm not sure support for user modification is necessarily part of the definition of open platform. I think Google fulfilled the requirements by allowing anyone to create a new Android device without licensing (provided you don't consider the Android Market part of the platform). Guess we'll need some other term.
An open source operating system doesn't do much good (for a power user/developer type) if the bootloader and root file system are locked. There are some devices that leave the bootloader open, but they're exceptions to the rule. And needing to exploit an unpatched security vulnerability to get root is unacceptable.