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ASUS is apparently killing the ability to root present and future Zenfone, Updated
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
At least there is still kind of some alternatives, like the Xperia 5IV (and the upcoming Xperia 5V) and galaxy s23 though they have problems of their own.
Namely poor cooling on the xperias and the tens of versions of Galaxy phones making finding a compatible custom rom and kernel pretty much impossible if you live in the wrong parts of the world