I don't see that that follows logically at *all*. The two just seem like totally different things. Instructions for debugging a given component are going to be the same whether you're running Fedora, Ubuntu, SUSE or whatever: debugging systemd is debugging systemd. There may be cases where there are local variations, in which case it makes sense to have a local wiki page, but in cases where there aren't, it seems perfectly sensible if the instructions are provided upstream. I don't see any way in which that means bugs reports should always be upstream.