They rewrote Notepad a few years ago. IIRC it's still possible to get back the original notepad.exe. Additionally, they managed to refactor Outlook to Electron

They rewrote Notepad a few years ago. IIRC it's still possible to get back the original notepad.exe. Additionally, they managed to refactor Outlook to Electron/webapp, which allows them to share the codebase between Windows/macOS/web, and deliver unified experience ... which might be a downgrade for Windows/macOS users.