There’s several aspects that always get muddled up together in these kind of debates
Firstly, the strong, the rich, the powerful, the cruel, have always exploited others, for all of recorded history for thousands of years. On all scales from individuals through families, clans, businesses and nation states. It’s a sad aspect of human nature and is as true today as it’s ever been and I can’t see that ever changing. Realistically all we can do is mitigate the worst of it through laws to protect the weaker, but it will never go away, just find new routes of exploitation, like playing whack-a-mole.
Secondly, the consideration of what is cruel and exploitative behaviour changes with time. Slavery is a well known example, something again that goes back thousands of years. It is in the Bible and is accepted by Jesus. It took until the eighteenth century for enough white people to start saying hang on, this isn’t right and they had to really fight against others with their bibles saying it’s a totally normal part of human society. Today of course it is condemned by all mainstream society, except as PP have said, it still goes on and we all turn a blind eye.
Following on from that is the tendency to judge history through the lens of today’s values. People we condemn today may have been law abiding, upstanding, admired citizens of their day (eg Colston). We will be judged in years to come for doing things that our descendants will consider abhorrent by their standards, probably related to pollution and climate change.
So I think all we can do today is examine our consciences to ask ourselves - am I living by the right values, do I do wrong by others, have I done so in the past. Can I address those wrongs. Laura Trevalyn has obviously decided to extend her soul searching to further back in time. Good for her, but should it be compulsory? IMHO, no.