Holocaust has been used and was understood at least since 1189 to describe the burning of Jews. See my comment
Edit: this is btw. not to detract from your point. The word holocaust as the deliberate burning of people was mostly used for burning jews, but also witch-burnings and similar events. Even the great fire of London was called a holocaust.
In pre-WWII parlance, calling what happens in Gaza a holocaust would absolutely be appropriate. Post WWII its usage is just… not helpful and has bad connotations that detract from what is important in the discussion.
Holocaust has been used and was understood at least since 1189 to describe the burning of Jews. See my comment
Edit: this is btw. not to detract from your point. The word holocaust as the deliberate burning of people was mostly used for burning jews, but also witch-burnings and similar events. Even the great fire of London was called a holocaust.
In pre-WWII parlance, calling what happens in Gaza a holocaust would absolutely be appropriate. Post WWII its usage is just… not helpful and has bad connotations that detract from what is important in the discussion.