I noticed this in a question from today:
I remember there was another question on this site regarding this, but it was less focused, and the answers haven't satisfied me
The question was eventually closed as duplicate but I can't tell if the dupe target is the one mentioned above; the wording is quite similar but doesn't look identical, and the asker didn't link to the older question.
How okay is this? My concern is that keeping answerers oblivious of older question puts them at risk of repeating points that were already made and explained there as well as depriving future site visitors of learning about related issues that may have been discussed there.