You are both right. It is worthwhile knowing that something has been posted before, in order to review old comments if interested and good content is always worth repeating.

In any case, reposting is allowed, for several good reasons, which have been discussed in the past.

Indeed, I had not considered that. I may have been used to people saying that links shouldn't be posted twice. The extra context is in fact nice!

It's nice to have the context of past discussions.

Ah, very good point. I hadn't considered that. :)