While the company policy stated one thing, many department heads did not allow employees to take advantage of some of the flex time options. It all depended on your manager. Many other elements of how you were treated depended on your manger. (Including one that denied remote work requested by a Chemo patient. )
Now that Covid has happened, the most ridged managers had to flex on remote work. The company only adopted Cloud technology in 2018.
If you want casual work clothes, this is not the place for you. Jeans day was once a year. Again Covid has changed this, but not sure about when people go back to the building.
The company has now retired or laid off most of its longest term employees. It used to be a company people stayed at for 10+ years. Not sure they intend to do this anymore. There started to be a shift into a different dynamic when the last rounds of lay-offs happened.