That is true but in french at least "informatique" means both "computer science" (for example you can study "informatique" at university) and "anything related to computers". "What's your line of work?": a DBA, sysadmin, software developer, computer scientist, etc. may all answer simply "informatique". A series of books for beginners about Excel, Word, Internet, etc. may be called "Collection informatique".

Or if, say, you have issues delivering something on time to a client (no matter the domain), you can always invoke a "bug informatique".

So "informatique" means and is used, at least in french, much, much, much more than just "computer science".

In a way it's even worse than in english: at least "science" is added to "computer" in english and it's kinda self-explanatory. In french everything is in the same basket: from someone doing its Ph.D. to someone having a lesson to learn how to use the mouse... It's all "informatique".