I don’t think money or vacation time are factors
I agree with this. I think Tom of Mn said this.
I am a baby boomer, but I observe my daughter, her husband and her friends, etc. Both their companies close down at Christmas, plus they have more than the alleged 2 weeks, plus work and days are flexible over and above that depending on their general life activities. They don't "travel" a lot, because they choose not to because they did so much traveling pre-child. My daughter lived in Europe for 7 years. My SIL is British. They and their American friends work hard, but they also take a lot of vacation time. They live their lives.
What I do notice (and I noticed this when I was working as well from my group) is that people don't manage their money. My daughter is extremely skilled at this and I will brag...one of my proudest moments was when she asked me to look at her financial spreadsheet of everything they spent for months to verify they could afford the house they were buying. LOL. My job is done! That brag over. Everyone should do that. I am close with other people, Baby Boomers, Gen X and millennials who spend every cent they earn on STUPID things. They aren't even saving for retirement. They can't fathom affording a vacation or retirement because they have to buy EVERYTHING.
Throughout my career, I made sure I could have a life outside of work. I worked a job so I could do that. I also saved money. I eventually started my own business so that I could take summers off to spend with my daughter. I would just apologize to customers and say I have a big project this summer, but I never said it was my daughter. People thought I must be loaded to have the life I had, but what I had was "Faith in the Distance", (love Jackson Browne). The minute an employer gets whiff of you being afraid or needing them, you are sunk. You lose all their respect. Those are the people who don't live their lives, but who work all the time because they are afraid, in my experience. They do not have faith in themselves or their future so they buckle under.
That being said, legitimately poor people (edit: as compared to those who just can’t stop spending money as described above) have never had money to travel, through all the generations. This is a separate topic and is comparing the incomparable in this topic. (Edit: Of course everyone one deserves vacation/time off, but that has never correlated to European or other vacations for the poor.)
Hold Harmless: I did not access this article. I'm in New England. Perhaps things work differently here.