We all are against chattel slavery, Silly.
But what it was vs. what we think it was today is loaded with discrepancies.
You would be wise to avoid generalizing about the subject.
I’d say generalizing that slavery limiting “opportunities” is quite the generalization.
And I understand the need to consider presentism.
I’m pretty confident that writing chattel slavery impaired the liberty of people is a valid statement both in the 1800’s and the 2000’s.