Everyone who knows about encryption know that there are limits to cryptographic attacks, even the NSA’s. And whose to say the government is going to utilize NSA resources on every two- bit criminal with an encrypted hard drive? I would assume they are NOT going to.
https://www.grc.com/passwords.htm
Get one, use it and write it down and put it where only you can reveal it (iffin’ you got some revolutionary info to hide!).
Full 4th/5th Amendment protection.
Honestly I think this whole article is moot. If the DOJ had any balls at all (presently they do not), they would try and install a hardware keylogger in your keyboard and grab any passphrase they needed (previous DOJ I suspect would only be able to do this with a high profile target), rendering the whole encryption pointless. They could even do it remotely.