blockchain phones sound good on paper, but I doubt it'll be of any value.
you can do everything on "normal" phones, perhaps even better if you use open-source and verifiable apps. as long as the OS & all apps won't be completely open and audited, you can simply not trust a manufacturer.
You're probabaly right about that, cannot trust any 3rd party with anything really. Only me me me takes care of my money and information best. But on paper it really does sound awesome. Imagine rest of the gang rocking iPhones and Samsung J5-s when you smack your blockchain phone on the table. Skirts will fall :)
a mesh-ready blockchain phone with extra range etc would be something I'd consider though. make it truly censorship resistant