You can't read English like if it was a declarative logical language. It is obviously an hyperbole to say "everyone". It means "a lot of people". So why they didn't say "a lot of people"? Language uses hyperboles to make a point stronger.

Some people use hyperbole to make a point, and some people see this as a red flag, and causes them to lose trust.

It comes up enough that I am comfortable saying that it feels like “everyone” to the OpenBSD devs.

https://hackertimes.com/item?id=25950845

https://hackertimes.com/item?id=45798439

https://hackertimes.com/item?id=34667522

https://hackertimes.com/item?id=43144607