I don't consider WPF dead either. We use DevExpress libraries so for most things as long as DE continue to roll-out updates we're happy. We can view WPF as the scaffolding that underpins things in which case updates aren't needed.
But it's another sad indictment of MS developers. How many UI frameworks have they now developed, and still they can't get it right. And that's despite them being in the driving seat for their targeted platforms.
I've said this of MS all along - they are very poor at producing future-proof output. I don't know if it's poor leadership, poor design/implementation or a deliberate view-point of 'make them switch away' but whatever the reason it's irritating.