Twitter is relaunching the reverse-chronological feed as an option for all users starting today https://www.theverge.com/2018/12/18/18145089/twitter-latest-tweets-toggle-ranked-feed-timeline-algorithm
“Over time, the company will learn your behavior. If you routinely switch to the latest tweets, Twitter will default you to them.”
So that's Twitter interface designers call “an option”. It says a lot about how Twitter consider their users IMO: let's not give them well-defined controls over what they see, they might get used to it.
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