Comment by GuB-42

I am not on Windows 11 so I can't really tell. And even if I did, I may be in a different situation than yours, we may not be running the same apps so what is shared can be different.

As for the "piggybacking" it is not really piggybacking, it is how shared libraries work (emphasis on the "shared"), aka. DLLs on Windows. For instance, if 2 to processes load "library.dll", it will be only loaded once, and the read-only parts of the library will be shared between the processes and it is one of the big advantages of shared libraries over static linking. A major part of the Weather app bloat comes from the browser engine it comes with, something many apps do today, and it would be reasonable to think that 2 apps using a browser engines have components in common.

Anyway, if you run Process Explorer and check the weather app process, it will tell you which is which.

This, by the way is a big reason why modern apps are often so bloated. The real problem is not just that so many apps are using browser engines or other huge dependency chains, it is that they all ship with their own version instead of using what is available on the system, so you have 10 different browser engines loaded in RAM even though a single one would be enough. Traditional Linux distros do it right, but now we have containerized application that break sharing. I understand the convenience, as you don't have to deal with shared library update that break the app, but the cost in both RAM and storage space is significant.