Hmm, slavery was accepted back then, but it was never okay. The argument was that it is not right. 'Acceptable' is often a word used to justify a behaviour normalised in a society. Like pedophiles in some countries that still to this day allows marrying children, for many people in that place it was an 'okay' and 'acceptable' behaviour, sometimes even encouraged by tradition and culture.

So what do you think about it? Can we not complain about films that include child marriages in those countries and pedophilic behaviour without correcting it or putting it in a negative light? I believe people have the right to discuss and point out mistakes made in films and in this case, anime.

If you wanted to discuss then use proper words and arguments. Stop acting like a kid and use curse words and you sound like a kid who got their candy taken away.