> the arrival of Threads is definitely an existential threat for Twitter
I had a similar thought when I joined Threads last night and within 30 seconds saw the accounts of Adam Schefter, Adrian Wojnarowski, and Shams Charania all actively posting.
If you follow NFL and NBA news you'll know these names but for anybody that doesn't, these insider accounts are firmly at the center of the NFL and NBA breaking news universe and for going on a decade now Twitter was where you went to follow them.
What Threads has done is break that monopoly Twitter had on this sort of thing. It gives regular users a clean, familiar, functional, working UI with a simple onboard process and it gives high-profile accounts a stable platform, a verified badge, and a boatload of users.
Could Twitter survive if it was no longer the epicenter of North American sports discussion? Probably, but it would be a big loss and would signal to other communities on there that Twitter's expiration date is rapidly approaching.