In every other supposed Marian apparition, its the local bishop who makes the call on its authenticity. The local bishops have made the call on Medjugorje, its been discredited, but people ignore the local bishops.
Good analysis here:
http://www.unamsanctamcatholicam.com/history/79-history/260-understanding-the-herzegovina-question.html
Yes, thank you! I believe you may have posted this for me at another time too. Good information. :) At the adoration chapel we attend, there’s quite a bit of positive Medj stuff about. I’ve thrown a few things away. It’s really troubling. We should bring it up with the pastor.