The phrase in the title is a common trope that comes up when VPN services are discussed. While this statement is technically correct, it can be misleading, as it implies that all providers handle law enforcement requests and prepare for worst case scenarios similarly, so their conduct cannot be a differentiating factor when you evaluate them.
Wondering how these magicians measure quality of service then, since they collect no juicy data. I find this hard to believe.
Quality of service is usually only useful with aggregate data which is worthless for prosecuting an individual.