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GrapheneOS says Google is making life harder for rival operating systems and devices
(www.androidauthority.com)
This is a most excellent place for technology news and articles.
I don't think it's a matter of knowledge, more of mindset. If enough people even cared, banks would not enforce any changes that would require to use Google play safetynet.
Btw, banks shouldn't even need apps. A webpage with local storage (PWA) should suffice for 99% of banking stuff.