I think that the answer in question is https://worldbuilding.stackexchange.com/a/38384/2113 (deleted, so visible only at 10k reputation or higher).
It was deleted by a vote of three users, not just one. The site is community moderated, so most actions are taken by consensus of members with sufficient reputation. A moderator did participate in that vote, but did not use moderator powers in it. You can recognize moderators by the diamond next to their names.
The answer is more of a comment than an actual answer to the question. This is not a forum. It is not appropriate to post comments as answers. The delete reason is given as
This does not provide an answer to the question. Once you have sufficient reputation you will be able to comment on any post; instead, provide answers that don't require clarification from the asker.
This is a standard message. Due to the way that the site works, this is attributed to a specific user. But it is actually generated by the software.
The intent of the message is to point you at some of the help text so that you could better understand why that post was inappropriate. It's saying to please not post comments as answers. Since you don't have enough reputation to post comments, please stick to actual answers or to questions.
If you think that the comment could be phrased better, you are welcome to make suggestions. That's what Meta is for. But please realize that the deletion was entirely in keeping with how this site works.