Until we have laws that guarantee that I won't be forced to be a Google customer, I will demand freedom over my device if I am practically prevented from running an alternative OS because I risk getting my access to the rest of society limited. If it means that some people will be more vulnerable to scams in the mean time, that is not my fault, but the fault of politicians who have failed to secure our right to digital autonomy and our right to remain analog. I also think there should be other technical measures that could mitigate these scams that would not be as draconic, but I don't know enough about what scams you have in mind that I can offer concrete alternatives.
I do not think that is tyranny, but I think Google is definitely being a tyrant and misuse their market position.
You are falling for the trap that all these wannabe dictators are setting up for us: that they are protecting us with all these regulations. Oh sure it protects some people in some ways, but you're not seeing how you're giving away your freedom and put them in control of your life.
I say all of you should give up and use iphones like me! :)