Yours is an interesting point as I am now questioning:
> "Those who cannot remember the past are condemned to repeat it" - George Santayana
I have expressed that idea with different attribution before now, but, on reflection, it is a 'trite quote' that can be trotted out far too easily!
Funny, I would have said the exact opposite. If people forget how bad things were, they seem more likely to repeat them.
Nazism, for one. And the rise in antivax sentiment - people today have never come across an iron lung, which is a testament to medical technology, but it means some silly opinions get way more traction than they should.
"Those who cannot remember the past are condemned to repeat it" - George Santayana