The alt-text panel hints at this, but the problem with making up a fake group everyone can hate is that racists and bigots will stretch the definition to include whatever they want.
We’ve seen it with “antisemitism” being redefined to include any criticism of Israel, and before that “pedophilia” being redefined to include drag queens and parents supporting their trans children. For that reason, hatred like this should not be encouraged, even if it’s imaginary.