Why Linux? (For Servers) – Info Linux

Why do you use Linux, instead of, say, OpenBSD? From what I have read, both OpenBSD and Linux both are good for servers, but OpenBSD seems to be a better choice for them. What does Linux do better, and why would I want to use Linux for a server instead of a BSD?

Just to clarify, I’m not trolling, and I am referencing this article, which seems biased.