I'd agree with this although I understand where the idea comes from. It is difficult for people to understand what is and is not a science and it is easy to think that computer science is not a science even when you study it.

The way we learn and study topics is divorced from the original method of discovering those topics. The way people learn Computer Science is generally by absorbing the information, not by doing the experiments. So it is difficult for people to understand that the way we have this knowledge is through hypothesis forming and experimentation i.e. Science.