If you hate stock Android, definitely try Graphene. It doesn’t come with preinstalled bullshit and let’s you run your banking and other shitty apps in a different user profile. Google Play Store and Services are completely optional. You get nearly full control without the negatives associated with rooting.
Are you just as concerned that cash is not traceable and that some is exchanged tax free? I don’t see how any GPU miners are profitable at this point. Outside of gaming: AI must have a larger GPU demand? Most miners are using ASICs. You’re absolutely right that mining energy should come from plants that have underutilized capacity and (obviously) renewable sources. The cat’s out of the bag on cryptocurrency and unjust laws don’t deserve to be followed. All government printed currencies eventually become worthless.