Hah, I thought Silverlight was dead years ago, but I don't keep up with Windows tech at all.

Silverlight is long dead, the poster was mistaken: https://help.netflix.com/en/node/2090

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

Yes and no. That post is about the plugin, but silverlight the standalone application framework is now just part of UWP (and this is about the netflix standalone app after all)

Ok, but the the standalone application is still not required for 4K. You can watch Netflix in 4K using Edge on Windows or Safari on Mac.

You’re right, edge is supported again (during the migration from old edge to new edge it was unsupported for a while). I totally missed that, although it doesn’t change anything regarding linux support.