I am not here to report about someone or some Ask Ubuntu issue specifically :). Recently in Ask Ubuntu Meta I became popular for a few days and got support from other Ask Ubuntu members (I am glad about that).
What I want to say is; we need a section in the FAQ that says do not mention or blame a specific user for an action they have done and that they can report it to mod's if an action is needed.
I don't want to talk about the past and I don't want to repeat this in the future for any one of us. I am not here to report and I am here to support.
This has happened before where a user was mentioned by name (an example here). It seemed that it was acceptable by fossfreedom and Aditya, as stated in the comments to the question. In this case, the user was editing the post to remove themself, though.
It seems that you should just 'ask nicely' for the author to remove the reference if you feel that it's unecessary or for any other reason, otherwise just leave it be.