This is what happens when you over regulate hiring practices in the name of inclusion, fairness, and fighting bias. I've seen numerous issues with this in academia as well where someone will be a proven candidate who you know will excel at the job but you can't simply hire them because it's against the rules. You have to spend ages interviewing all of these unproven alternative candidates with focuses on minorities etc. If you reject all the alternative candidates arbitrarily and go with who you wanted in the first place then you risk getting slapped with a lawsuit. So instead we have to go through this huge song and dance where we write these fake job descriptions which as you say are obviously only written for one person, waste everyone's time, and flood the market with fake hiring opportunities. I've been on both sides of this process and it's very aggravating.

Even worse, sometimes orgs will set up basically fake interviews where they bring people in with no intention of hiring them just to put on a show to avoid a lawsuit.