It's really frustrating that media types are deprecated and I'd like to see it revived as a media feature. I understand the impossibility of picking the perfect

It's really frustrating that media types are deprecated and I'd like to see it revived as a media feature. I understand the impossibility of picking the perfect layout for a website based on a broad category like "desktop|phone|TV". But in practice I think it works fine. Certainly better than assuming the device type/user preference based off some other feature. I'd love to hear that this is a solved problem and I'm just behind the curve.