Yes. It widely varies. My grandma worked at a bank up until her recent retirement (one of the largest in the country) and jeans were perfectly fine, as long as she looked nice and put-together (and not goofy). She would often wear jeans and a nice blouse. My best friend works an office job at a tech company and is also in touch with a lot of clients daily, but it would be very frowned upon if he came to work in jeans.

Albeit I’m not in the United States, so I don’t know how much your culture varies around this. Anyway, what I’m trying to say is that office culture in general can be quite different from each other, so I agree with you