I don't need or want the browser chrome like tabs and toolbars on those windows, and I usually pin them in the taskbar using their own icons. Makes alt-tab nicer too. I don't use it myself, but PWAs can also register as file handlers and be used to open files like any other installed program, which would be handy for image editors and similar.

https://docs.microsoft.com/en-us/microsoft-edge/progressive-...