Oh yeah they do that - I once brought up the cultural aspect of genocide in a discussion about Russification and was instantly told that I only cared about that definition of genocide so that I could accuse China of genociding Uygurs and any attempt to point out that no that has been the definition of genocide for a long time (see - the UN’s various declarations) was met with them demanding me I show them the proof that China was really doing that.

…in an argument about the Baltics in the cold war.