I guess I'll take that as a compliment, thank you.
You're right to point out the unintended consequences of my idea, though, and I see now that it would need significant changes to be workable. Firstly, I don't think that encryption should count as a cover-up in any circumstance, just as the undisclosed contents of your own brain aren't covered up in any way that's punishable by the law.
In general, I think that a cover-up means irretrievably destroying evidence that would naturally exist (like an item of clothing, or a book of accounts) or that you had a statutory duty to create and preserve in the first place (like body-cam footage or internal government communications). Defining what "naturally" means when applied to something like a "no logs VPN" might be tricky, but I think a reasonable line could be drawn.
This seems like the worst idea with the best sales pitch that I've heard in 2021 so far.
I haven't thought out the lesser scenario where hiding evidence is illegal (something something working on your own conviction), but at least this "gets you convicted for the worst possible crime" seems like a terrible, terrible idea if you don't want to live in a place worse than North Korea.