I have no idea what anyone should be doing, but I'll tell you what I personally am doing:
- emailing my representatives over and over
- emptied all cloud services and all personal big tech accounts (can't do much about the work ones..)
- getting acquainted with Linux, VPNs and Tor
- learning to flash custom ROMs
- testing said custom ROMs
- digging into app permissions - even graphene comes with things enabled that I realized I want to turn off (like ad privacy, printer services and android services that enable nearby share which I personally don't use)
- use Obtainium and F-droid for apps
- testing out p2p services to see which ones are useful
- stashing Linux isos, so I hopefully always have at least one that either doesn't have age verification or one where it's easy enough to rip out
- downloaded "linux from scratch", but I'll admit I haven't read it yet
I would love to be wrong about this, but I don't think it's likely. Why would a government voluntarily spend money on making the app work for a minority of people running a privacy OS that politicians associate with criminals and gangsters?
Also, it's not like the wallet app will actually be open source in the traditional sense where you can fork and compile it yourself, so I think getting any decent version of it seems like a long shot