Further, I think that creating this link is not the Gentoo way. This
link is neither created, changed or destroyed when emerging
gentoo-sources or any of the other kernels. I think it should really
not be done here.
Well I do agree that it is a behavior that shouldn't exist, since the "symlink" USE flag is supposed to give the user control over this. However, I am not so sure that this is a problem with the rt-sources ebuild, since I can say from experience that gentoo-sources also does this. It didn't always occur (it used to be the case that if you emerged a kernel with USE="-symlink", no symlink was created even if you didn't have one), but there was one point when I remember it just started happening.
So my point is that the problem may lie elsewhere, but of course since I don't know what causes it, I can't say for sure.
- Colin