Zuckerberg has said that they won't run ads until there is a credible path to 1 billion users.
So for a year or more it will be Threads with no ads. And Twitter with according to their newly hired CEO "full-screen, sound-on" ads.
And as mentioned you can simply Mute/Block them.
But there is going to be a year or more of Threads being ad-free whilst Twitter is not. That's a game changer.
Not it won't. Facebook removed the chronological feed 10 years ago, they won't reintroduce it in Threads.
"Curated" feeds is how they get announcers to pay for visibility since the user has no control over what it is displayed at a given time