Don't you use WhatsApp?

I've never seen "OTOH" used before but I understood what it meant from context. Lol.

What is stopping a hard fork?

The same reason nobody is doing a hard fork of Chromium.

The gigantic task of maintaining and developing a mobile OS that needs to retain compatibility with AOSP/GPS anyway to tap into the huge amount of applications that are available?

It will cost a lot of money and as long as Google is still doing regular AOSP code drops, what's the point?

Why would other countries go to war?

The NATO Pact, established in 1949, is a collective defense agreement where an attack on one member is considered an attack on all.

Even an attack by one of its own members that's its leading military and financial force?

Yes, in fact that would be the most important time to follow through with that agreement from the position of the other members.

Yes

Collective defense aka casus foederis as defined by Article 5 of the North Atlantic Treaty.

Even an attack by one of its own members that's its leading military and financial force?

Absolutely. Yes.

Bot?

How did you get it back? What's the story.

The article answers that question. Do you want commenters to summarize the article for you? It would be easier to just click and read for yourself

It’s in the first paragraph.

I turned off my watch history. Recommendations keep you there for hours.

I wonder if you can delete your entire existing history to sort of reset the recommendation engine? i've definitely had to delete individual ones from my history to downrank similar ones in the past.

Not that I use Facebook anymore, but would the Messenger app no longer work?

The mobile apps will be fine. The shutdown will affect the PWA/web access and also the "desktop app" such as Windows or macOS.

If you have a FB account, then that URL they give will work in your web browser. If you don't have an FB account or you deactivated it, and you only use Messenger, the mobile apps will be the only way forward.

Upwork freelancers should answer too, thanks.

Absolutely!

I did think about putting "and Upwork" in the title.