I'd also add the way you framed your original post was misleading and that was probably intentional. I think you should get some counselling.
It's hard growing up with a medical or high achieving parent. I understand.
They are always seen as 'beyond reproach' and the 'good person', but the truth is they are not perfect they do get things wrong, they are human.
But you don't need to twist stories by omission and you don't need to keep reminding them of a big historical 'wrong'.
It's a vicious cycle, the more you go to the extreme to show they're not the 'hero, the more petty you will look and the more you will look like the villain.
You're 40 and a parent in your own right but you sound like a petulant rebellious teenager. Your thread comes across like: "See my dad isn't always right and he's soooo annoying" and you've been rude to other posters.
So yes, reduce contact, but not because your dad is some abusive twat villain. You need some time apart so that you gain some independence and maturity for yourself and be ready for a healthy adult relationship with your dad.