I suppose if you're a Millennial, everyone older than you is a Boomer.
It's actually mostly Gen-X who are hitting their midlives today and I think the "red sports car/affair/tennis lessons" midlife crisis was personified by the people who hit their midlives in the 60s-70s, the generation that mostly predated Baby Boomers.
Still, the points made are valid. You can't have a midlife crisis if you've never really had a life.
“Middle Age Crazy” starring Bruce Dern and Ann-Margret.
A married man is turning forty and that’s when the midlife crisis hits him. He becomes obsessed with young women and fast cars.
https://www.imdb.com/title/tt0081157/