Put another way, if Stiller's team was building this for Amazon or Netflix, would that be a Mac Mini on Richman’s desk, or an HP or Lenovo box? Why even use a Mac in this editing process at all, when other companies offer access to better GPUs anyway?
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Sure, there's an Apple logo in the top-left corner (two, actually), but it feels superfluous, knowing that the software isn’t directly on the machine and it [could] just as easily be running on a Windows or Linux box a thousand miles away. There are way more efficient ways to do this, and Apple doesn't offer them. Instead it relies on cloud providers like MacStadium, or localized IT teams, to work around their convoluted rules around VMs.
So the client is irrelevant (it's just a terminal), and a non-Apple server would be a better option. (Again, I have no idea if any of this is actually true.)The point of the article, and the full quote, is "These editors aren't working on Macs, per se. They're working around them".