Elon Musk said X had changed its ranking to favor time spent. News is the name attached to it.
For a publisher who gets traffic from X and just felt the mix change, the only useful question is whether the opening sentence changes what you open, buy, or tell someone before the day ends.
Skip the confident rewrite you will see elsewhere. Motives and timelines that were not in the report do not belong in this brief on X ranking time spent.
I will correct this if a primary source from News contradicts it. A brief on X ranking time spent can be overtaken. It should not get more certain just because it was reposted.