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I don't think that's fair. Even major audio companies were warning customers not to upgrade to Sierra for months due to compatibility issues. Here's iZotope's

I don't think that's fair. Even major audio companies were warning customers not to upgrade to Sierra for months due to compatibility issues. Here's iZotope's page about compatibility with their audio plugins - if you bought it more than a couple of years ago, it won't work on Sierra: https://www.izotope.com/en/community/blog/product-news/2016/08/operating-system-news--macos-sierra-and-izotope.html https://www.izotope.com/en/community/blog/product-news/2016/... Personally I had to spend a few hundred dollars upgrading my audio software that worked in Mountain Lion so it would run on El Capitan. I'm still running into a few glitches in places.

jeremyhu 10y ago
That page indicates what versions of those plugins are certified by the vendor to run on Sierra. That doesn't mean that older versions won't run, it just means they haven't been certified to do so. I've been running software on Sierra that is only certified by the developer for Snow Leopard through Yosemite, and it still runs just fine for my needs. Apple puts a lot of effort into binary compatibility.