But, but... you get to run Facebook binaries on your desktop computer! Comes with a full access to everything, so it must be very exciting for at least one party involved.
I previously created my own "native" app from this by wrapping https://web.whatsapp.com in an Electron wrapper so that I could have WhatsApp live separate from the browser, with it's own Dock icon.
Some ways in which the official app is better:
* The official app extends to the edges of the window, whereas the web app has a "window on a background" design, which takes up more space.
* The official app has keyboard shortcuts.
* The official app has better notifications.
A couple weeks ago. One thing it does better than the official app is that on Mac the red window button hides the window rather than terminating the process.