This notion that your encryption- any encryption- is going to stop a state-funded actor from getting past to your data is just as ridiculous IMO as the people who stockpile AR-15's and cosplay soldiers on the weekends think they're a realistic threat to the same military that has predator drones.
If the government wants your data, they probably already have it, just like if they wanted you dead, you'd already be in the ground. Assuming there's enough left of you to bury anyway.
Reasonable people can admit that they can't do much about case 2, while still believing that applying countermeasures against 1 can be effective. Also note there is more than one government in the world that may intend to exploit your lack of privacy...
Just because you're given up on privacy and sovereignty doesn't mean you should go around infecting others with the same contagion.
Well, there's certainly a chance. Firmware is reverse-engineered all the time.
The NSA has loaded their firmware after the fact without the drives' OEMs cooperation:
* https://www.cbc.ca/news/science/nsa-hid-spying-software-in-h...
Even if you have the type of resources that a big tech corporation like Google has, sooner or later the NSA will get a copy of your data.