Your figures are off by a large margin (70% to 240%). The average American worker took 17 days of vacation time in 2017.
For paid vacation time - the more important item - it depends heavily on experience and company size.
"In 2017, the average worker with five years of experience at a company was given 15 days of paid vacation and the average worker with 20 years of experience was given 20 paid vacation days."
"According to the Bureau of Labor Statistics, 76 percent of private industry workers ... After one year of employment, these workers were granted 10 days of paid vacation, on average."
https://www.cnbc.com/2018/07/05/heres-how-many-paid-vacation...
If I was expected to work 50 weeks in a 52 week year I don't think I'd ever get a full-time career. I'd probably run off and become a surf bum selling loom bands on the beach.
You just summarized my career path after working as a software engineer for 10 years in SV.
It was such a big issue for me that it motivated me to leave the SV tech community and the US altogether. I don't see myself ever living there again.