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I don't think raw image quality for photos shot in ideal conditions has changed that much in the past few years for how most people display their photos. I half suspect that any camera that's >10Mp will do for showing on a monitor/ the internets.
I bought an ageing Lumix LX5 a few days ago (released seven years ago), and I don't have any issues with image quality compared to a two year old iPhone 6S+
What you want to buy a dedicated camera for is manual control over the camera (over and above what VSCO etc can do for smartphones), differing focal lengths and better low light performance.
Does RX100 (Up to mark 3) stand well against top-end modern smartphone cameras? iPhone 7, OnePlus5 etc.