At the height of the Rohingya genocide in 2017, the UN & most regimes used the term ethnic cleansing rather than genocide. Never was a distinction more reprehensible but such an equivocation justified inaction & allowed them to blame ARSA terrorists rather than the Burmese regime. Today, the UN & even the US government use the term genocide. It’s not certain why the change since it hasn’t impeded US or other foreign investment in Burma. But it’s important to observe how they will use the designation of genocide politically to bring Suu Kyi & the generals to account.
https://broadly.vice.com/en_us/article/8xbpp3/rohingya-widows-refugee-camp-rari