Eh, let's not act like it's a startup that came out of nowhere, it's an offshoot of a platform with 2.4 billion users. Threads isn't Threads, it's Instagram.
As for it becoming a go to for breaking news, I'm going to say that it doesn't. Meta doesn't seem to have the appetite to run a news & politics driven app. There's a bunch of heavy lifting involved in running a platform that became the defacto referee for social conversation. Meta very clearly wants no part in wearing the stripes. Twitter wasn't a news app, it was the frontlines in the culture war and news was the steady stream of weapons and artillery.