In my country generations didn't even have a name until recently when 15-20 yo started talking about millenials, Z and boomers, where boomers are anybody about the age of their parents and more. Technically most of those parents are generation X, some even Y. I learned it by reading the article now.
Furthermore and more importantly different social and economic dynamics mean that people of the supposed same generation are different, especially when generations span only a few years. They watch the same videos but the world around them could be significantly different. A generation in one part of the world could be more similar to the previous or the next one somewhere else.
Anyway, probably all results still hold true if we think about evaluating the differences between people that entered the job market recently and colleagues that have been working for 10 or 20 years.