We have a project at work, it's nothing crazy, mostly shuffling data from one pipe to another, maybe a few thousand lines of code. A true standalone build including dotnet is over 180MB. The build that relies on the system dotnet install is still over 50MB. It's not even a GUI, it's a background service.
Things on Windows have a bad habit of enormous binary bloat, I'm not sure why. I don't think the problem is near as bad on Linux in general, but I don't have enough experience with linux dev to really say