This is the meta-website. Specifically set up to deal with the meta-subjects. At least until we launch meta-meta-stackoverflow.com ...
First of all the link you mentioned (blog.stackoverflow.com/2010/08/the-death-of-meta-tags) refers to stackoverflow.com, not meta.stackoverflow.com.
meta.stackoverflow.com was specifically created with the intention of supporting and administrating stackoverflow. The meta-tags you have shown above are necessary for the adequate response to each question by moderators, meta-users, and the devteam. The content of meta.stackoverflow is intended to cover meta-topics, without which, the site would not exist. Since meta-tags help the process, they are still here