I need 20k reputation to edit a Tag Wiki. Currently, I only have 4k. At my present rate of rep accumulation, I will be able to edit Tag Wikis in about 2025. At that point, I will presumably be able to edit the Tag Wiki on topics I know nothing about.
There are topics that I do know something about. And SO knows this, because I am the highest provider of answers for those topics - and I am the only person to have been awarded a badge for one of those topics (WebMatrix).
Surely facts like these could be taken into account when granting Tag Wiki Edit privileges?