To be fair, Baby Boomers are actually statistically the reason divorce rates are so high, and also why they’ve been going down recently.
Not trying to be insulting, just wanting to speak about the statistics I’ve read, so I’ll try to use the full generation title to distinguish.
Speaking about the generation as a general group, Baby Boomers had many marriages and many divorces per capita. Your stereotypical “on my fifth wife” dudes were Baby Boomers and were a disproportionate percentage of marriages that ended in divorce - basically “Divorce Georg”.
From a statistics perspective, a large part of the reason divorce rates are going down these days are because as people get older, they tend to settle down and have less energy for those kind of antics basically, and the rate of Baby Boomers marriages and divorces was slowing down in response - with other generations being pretty much stable.
So on that level I’m not particularly surprised that those attitudes towards divorce are still affecting them in old age. It does pose interesting questions for our elder care infrastructure (or lack thereof) though.