Readers will be in no doubt after reading this #BBC Sky At Night article by Ian Todd that earth's rotation is slowing due to #climate change - despite the fact that earth has been spinning FASTER for over 50 years.
https://www.skyatnightmagazine.com/news/climate-change-earth-longer-days

The study cited is primarily concerned with use of neural networks to analyse polar motion and cites, in turn, IERS as a data source. The IERS whose data shows earth's spin is ACCELERATING.