Surprisingly, it looks like the decomp project for Perfect Dark is complete but not the one for GoldenEye (according to the status page it's 75.7% complete). No idea why, but I can say that matching decompilation is a laborious process, and the team of core contributors for any hobby project like this tends to be fairly small. A single person burning out or just moving on to other projects could be make or break for getting it across the finish line.