winsxs folder can grow to 50 GB too. But there's lots of versions of libraries, hard linked to where the original file should be, with no way to clean that up. Caused by lots of installations and updates over time. Only solution is reinstalling the system.
Imho, scoop can save you some of that trouble, since it only copies files and adds registry entries, instead of using Windows setup interfaces. It makes updates easier too.
Tax filing and other government stuff is digital here. There's certified services to send legally binding documents, too. Only thing lagging behind is Post with package returns.
I think what you're looking for is yt-dlp.