Is that kind of comment subject to deletion?
In my opinion, as it is posing as an answer to the question, and we can't vote on the validity of the link/information in the link, it should be deleted as an attempt to answer in comments.
Until there is a policy that answers in comments are appropriate, as a moderator, I will remove such comments (as well as the comment before it. I'll leave it up for the time being.)
This is why meta participation is so important. Unfortunately, participation in meta sort of slow here still.