has this been criticized?
Yes, by Gregory Stanton.
Ethnic cleansing
Gregory Stanton, the founder of Genocide Watch, has criticised the rise of the term and its use for events that he feels should be called "genocide": because "ethnic cleansing" has no legal definition, its media use can detract attention from events that should be prosecuted as genocide. 
what type of rock is in the grand canyon Sedimentary rock. where is this canyon located? Western North America. what is it? It is a steep-sided canyon carved by the Colorado River in Arizona, United States. who were the early settlers here? The Ancestral Puebloans. who were they? They were an ancient Native American culture that spanned the present-day Four Corners region of the United States, comprising southeastern Utah, northeastern Arizona, northwestern New Mexico, and southwestern Colorado. how dis they get their name? "Pueblo", means "village" in Spanish. what battles have they fought? Eevidence at Sacred Ridge site, near Durango, Colorado, is best interpreted as warfare related to competition and ethnic cleansing. what is this type of cleansing? Ethnic cleansing is the systematic and systemic forced removal of ethnic, racial and/or religious groups from a given territory by a more powerful ethnic group, often with the intent of making it ethnically homogeneous.
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Ethnic cleansing [SEP] Criticism of the term
Gregory Stanton, the founder of Genocide Watch, has criticised the rise of the term and its use for events that he feels should be called "genocide": because "ethnic cleansing" has no legal definition, its media use can detract attention from events that should be prosecuted as genocide. Because of widespread acceptance after media influence, it has become a word used legally, but carries no legal repercussions. In 1992, the German equivalent of "ethnic cleansing" () was named German Un-Word of the Year by the "Gesellschaft für deutsche Sprache" due to its euphemistic, inappropriate nature.