Funny thing is, on an older Mac, If you try to run Netflix with the most current supported version of Safari, they redirect you to a page about Microsoft Silverlight[1]. If you don't read that page carefully, you might conclude you need Silverlight to use Netflix, which, of course, 404's when you go try to find it. Totally broken experience. I encountered this recently and had to download Microsoft Edge for Mac.

I'm not sure if I should be more irritated with Netflix, who can't be bothered to maintain backwards compatibility with not-that-old browsers, or Apple, who can't be bothered to get newer versions of Safari to work on older Mac hardware. Both companies are displaying a total disregard for paying customers who just don't happen to have the latest expensive hardware.

1: https://help.netflix.com/en/node/2090