That was what i have been lead to believe as well.
The majority of the integration with any source control is in the Editor, so that you can use the editor and in the background it checks out what you need, adds files, etc… These files are all large binary files, and version controlling them will quickly cause your repository to grow to 10’s of gigabytes quickly, since small changes can cause all of a binary file to change.
If the version control system that is integrated into the editor doesn’t handle gig’s of files, or binary files well, it probably doesn’t make sense to spend the time on the editor integration.
If we are ill-informed and git handles large binary files well - we should consider adding some content to our github source 