Because ARMv6 is EOL by ARM, has a number of architecture issues and design/toolchain bugs. Until the RPi came along there was literally no other non low end ph

Because ARMv6 is EOL by ARM, has a number of architecture issues and design/toolchain bugs. Until the RPi came along there was literally no other non low end phone devices that had the ARMv6 design in them. Fedora made the decision that ARMv6 wasn't worth the effort in supporting and the performance hit that would affect the ARMv7 devices (at the time based on toolchain optimisation). The original Raspberry Pi was announced long after that decision was made and it was decided that it wasn't worth the effort to support ARMv6, even 5 years on from that decision it's still the right one to have made, and most other distros have had the same discussion around ARMv6 and still made the same decision to not bother with ARMv6 support.