I'm sure this is just an oversight on someone's part, but there is currently no portage-rescue for x86 in the rsync portage tree. If you've broken things to the point where you need a portage rescue image, you may well not be able to run wget or similar (I needed one due to broken glibc after a power failure during emerge, but used a second box to recover). Reproducible: Always Steps to Reproduce:
If wget can't run due to a broken glibc... how is emerge going to run? I removed them because 2 megs in rescue tarballs isn't overly helpful. If your box is that broken, then a liveCD is probably required which has the capability to run wget. If you have another scenario, I'll listen, but I don't foresee adding them back into cvs/rsync.
It just seems odd to me that Gentoo supplies rescue tarballs for some architectures and not others; if you're removing the lot from the rsync rotation, that's a good enough reason to close the bug as FIXED AFAIAC.
They will all be removed in the near future.