I assumed that creation of installer binaries for a release depends on having the release manager or a lieutenant have access to the given platform (Windows, OS/X) and tools, For instance, the RM or lieutenant might only have access to such a platform part-time (e.g., only while at work, or only at home). In such a case, providing additional hardware could expedite creation of the binaries.
I'm sorry if I misunderstood the issue.
I think you do misunderstand: the people that do (occasionally, or eventually) provide OSX binaries have hardware available to them all the time. They only have part-time to work on Python, though. Of course, if somebody would promise a more timely provision of binaries, and can't do that because of lack of hardware, we would have to look for a solution. Regards, Martin