So your idea of societal progress is one that believes all history is worth looking down on, that there's nothing in the past worth celebrating because every figure acted distasteful or had views distasteful to modern eyes?

I guess all of human civilization has just been a giant failure. The only chance we have is for us poor wretches to retroactively flagellate our ancestors and beg forgiveness from the gods of modern enlightenment, complete with the knowledge that we too will be flagellated in our own due time, and rightfully abhorred in the judgement of future generations, no matter our worldly achievements.

For all its supposed enlightenment, modern political correctness is really more akin to medieval Catholicism

Or you could like... understand that people behave in the context of their time in history, be glad we've moved past that, and celebrate the contributions of the people that got us to where we are.

I can celebrate George Washington as a founder of the country and also understand he was a slave owner.

Pet ownership is my favourite example of what will be seen as immoral in the future.