Yup, 9- is the reason (and only one) why I still use Twitter. The rest of the content is absolute garbage, as illustrated in the "for you" tab which seems to be a mix of all your other points.
There is btw a browser extension called "control pannel for twitter" available for FF and Chrome which let you hide the "for you" tab (among other options). Very useful on desktop. No such option for mobile though.
For mobile, “Control Panel for Twitter” has a paid safari extension for iOS or a free user script version for any browser that supports a user script manager. Unfortunately solutions like these only work on the web app, rather than the native app.
There is btw a browser extension called "control pannel for twitter" available for FF and Chrome which let you hide the "for you" tab (among other options). Very useful on desktop. No such option for mobile though.