No, "Universal" apps in this context means these apps can run in Mac OS, either on an Intel Mac or on an Apple Silicon (ARM) Mac. Nothing at all to do with iOS, iPadOS, Windows or Linux.
The only thing that comes close to being "universal apps" would be applications that run in a browser.
* Universal apps (also known as "fat binaries") that run natively on Intel and M1 Macs
* ARM-native Mac apps
* Intel-based Mac apps via Rosetta 2
* iOS/iPadOS apps (developer’s choice)
* Unix/BSD command line apps (Vim, tmux, bash, zsh, etc.)
* Linux via’s built-in hypervisor
* Java
* Electron apps (VS Code, Slack, etc.)
* Windows via virtualization
* Web apps (Service Workers, WASM, push notifications, etc.) on Safari, Chrome, etc.
Safari is already a universal app; I'm sure Chrome, Firefox, etc. will follow shortly.