Lots of independent developers use GitHub or its equivalents to host their code repositories. And since they're simple to use and well understood by the public, that's a great idea. But as anyone who's ever created a project that attracted a whole lot of attention can attest, the platforms aren't well-suited to distributing binaries and other software releases.
In most cases, GitHub projects that post binaries do so by having a single server or VPS get triggered by a webhook to compile whatever binaries the project requires. And that means every time a user tries to download the resultant binaries, they’ll be making requests to that same single server instance. That's both inefficient and a recipe for download problems.