It seems like the obvious solution would be to replace words that refer to specific races, nationalities, genders, religions, etc. with symbols that only indica

It seems like the obvious solution would be to replace words that refer to specific races, nationalities, genders, religions, etc. with symbols that only indicate the category so if someone ranks "the Danes are rude" as hateful that is translated to "the [nationality] are rude" and is applied equally to a comment that says "the Swedes are rude". That way they can continue using the same system while eliminating the most obvious sources of discrimination.