I dont think you know what that actually is.
Its just the AUR, with a few things added, and automatically (blindly!) compiled and served as if it is a regular repository. IT IS NOT. Those packages are not vetted, inspected, etc. All normal precautions of using the AUR would apply … except its precompiled and there is no pkgbuild to inspect or augment.
None of that is the same as ‘getting packages early without changing branches’ … its simply using the AUR more dangerously.
And that danger factor multiplies exponentially when, such as in cases like yours, the user has no idea what they are actually using, how, or the the implications of it.
I should also state … that the AUR, and to an even greater extent, 3rd party repositories of any kind, are unsupported on Manjaro. Use at your own risk.
@ZeMind consider editing your post.