I think you need to learn where the origin of the word genocide comes from. The word was developed in direct response to the holocaust by Raphäel Lemkin in 1944. The word did not exist before then.

You can not disconnect the word genocide from its origin as a word that was specifically created to prevent people from being able to deny the holocaust, a huge amount of effort was put into making sure the holocaust would be extremely difficult to revise and/or forget by contorting it into something other than what it was.

When you misuse it, you are directly taking part in misusing an important word in describing and defending the holocaust, developed specifically for the purposes of preventing holocaust denial.

It is an action the helps holocaust deniers by changing the meaning of the word genocide. It is soft holocaust denial.