No, Git's object store was not designed to hold large binary blobs, and no implementation of Git in any language can change this. It's a reasonable request; I mean, Git doesn't even deal with "pretty small" binary files very well, either. But it's all simply a consequence of its design that was thought up all those years ago.
The core object storage model and data format (and many, many things on top of those) have to be changed/extended/fixed first, but it's realistically an immense change, so git-lfs and other various solutions are about as good as it'll get in the mean time.
