This is a stupid article that obviously does not care for Mariah Carey. Most of the acts that appeared on Dick clark Live NYE were taped & edited days prior, therefore did not have the same risk of technical mishaps as MC.
Also, Mariah Carey in 2016 had an acclaimed tour of the UK,Europe, and South Africa and did not have any embarrassing moments occur with the sound. If you had googled any research the writer would know all this to be true.