> It may be that the 662 MB used by the "Renderer" is shared between many Windows components

From the screenshot in the article, this is the memory usage of the Renderer process spawned by the Weather App. I find it very unlikely that some other app (say, the Copilot app) can then piggyback on Weather Renderer process. Do you have a source for this?

> killing that Weather app may not reclaim as much space

Closing the weather app on my PC does in fact kill all child processes and frees up around 1GB of committed RAM. Are you not seeing the same?