That's incorrect. It's a BSD-style license, it doesn't get much more basic than that. https://en.wikipedia.org/wiki/BSD_licenses
The point is that is may be BSD-style license. But it is not a BSD license. I may need to run OpenLDAP license with our company lawyer to make sure it is BSD-like and to be sure about the implications that might be hidden there. I would not need to do that with a BSD license. Everybody knows that one already. That's the power of standardization. It saves time and lowers barriers.