I don't think they are "making their own thing". From the post, it seems like this is already what they use on the other platforms. From what I gather, they a

I don't think they are "making their own thing". From the post, it seems like this is already what they use on the other platforms. From what I gather, they are switching the Linux builds to use it as well so they don't have to duplicate development effort. I think that makes sense. It sounds like it might be rough and they seem to be aware of it; hence, the urgent call for testers.