Once again blowing things out of perportion. It is unlikely that Sparc will be dropped as the kernel issues are not that big. I believe part of the problem is that Debian is using older kernels where the bugs were not fixed while upstream kernels are already working and stable.
The Gcc issues aren't that huge either.... it sounds like a packaging issue rather than a fundamental problem with Gcc.
There are issues though... but I think they can be resolved by better cooperaition between Debian, Gentoo and FreeBSD (which has Firefox fixes up to FF 24ESR I think)