I think that theymos' idea is to exclude any advertising or recommendation of a mixer and it doesn't need to be a link. The rule, like any rule, must have loopholes that someone will try to exploit.
Trying to exploit the loopholes by playing around with the word filters is also against the mixer ban rules, so one shouldn't do that to be on the safe side.
For example, this post, in my opinion, is not in line with the mixer-ban rule, but it is still there and I see it as a kind of promotion without the link or even writing the full domain name. maybe no one reported it
You mean this thread and not my post that you quoted, right? The question and the OP's intentions aren't according to the new rules. But the replies of other users and the flow of communication is, so I think it's ok.