Especially for Meta that runs far more popular apps

Also, I read that threads is connected to the technology behind Instagram, which is why they can share data back and forth. If you think about it, Instagram already has a fair amount of the technology well in place, for posting images, text, and videos of a limited length.

Given how long that code base has been alive, it seems unreasonable to think they could simply "wedge" Twitter code in to replace assets they already own without completely blowing things up.

They've likely been working on it for a while, and now is the time to pounce.

I agree with you. I wonder what they'll bring out during the lawsuit.

I've written a twitter clone in PHP once, it's not hard. Throw in some Ajax to auto refresh, and you'd have something similar to what they have been using this whole time.

It's easy to handle 100 users. It's difficult to make it (timeline, search, and other stuff) work for 10e7 users (though Meta already do).

Money and hardware. It's not like every other website doesn't have growing pains.