An article about the ocean which has no bearing on the hobby since we can measure and adjust the levels if need be.And just because
Unravelling the different causes of nitrate and ammonium effects on coral bleaching - Scientific Reports
Mass coral bleaching represents one of the greatest threats to coral reefs and has mainly been attributed to seawater warming. However, reduced water quality can also interact with warming to increase coral bleaching, but this interaction depends on nutrient ratios and forms. In particular...www.nature.com
In the ocean one can not simply turn down the heater to stop the stress of nitrite poisoning. If you actually read the article you posted, the high nitrite was also in conjuction with thermal stress.