It’s an equivalent app to make a comparison with, one from an OS company.
But yeah, I still remember when a weather app would take 10 MB and I was complaining (1999)
250 MB is exactly the sort of bloat you'd expect from this sort of daft web-browser-wrapper application, and Apple get it there. 1.2 GB, on the other hand, is 5x as much, and completely insane even when you start off with daft as your starting point.
10MB to tell me the weather from a remote server...
Let's remember that the sprawling world of Legend of Zelda SNES (a Link to the Past), including all graphics, music, code and dialogue was 1MB.
10 MB is ridiculously overbloated. 1 MB or something in that vicinity should be more like it.
I prompted my own windows taskbar weather app in rust with radar and forecasts and it's 233 kB.
https://github.com/derac/WeatherTray
I use Linux now, so you're on your own if there are issues. It might require some windows library to be installed but I don't recall. I ran it for a long while on win11.