I’m not saying that you shouldn’t spend more time with your family. I’m saying that we should give our past selves the benefit of the doubt when it comes to their decision making, whatever your present self decides to do. It’s just an argument against regret.
I also found it interesting that my grandmother was extremely loving and caring to me. And my grandfather (who was ever less kind to my mother than my grandmother was) was very affectionate to his great-grandchildren (but not his grandchildren). Maybe they both regretted it near the end of their lives and tried to handle things differently with the younger generations?
But yes, I agree- I would guess most people had more tact and empathy than my grandmother apparently had towards her daughter, and wouldn't say something like that even if it was true. And if they did many their kids wouldn't be too quick to recount the experience publicly?