It's impossible for me to believe that a person who can hand roll a file encryption tool in C, who knows how to use LUKS and signed git tags, who knows about ChaCha20 and HMAC-SHA256, didn't understand the results of a google search for "linux encrypt files". Did he have a seizure right after hitting enter in the google search box, inadvertently close the browser window, and then wake up and forget having done the search?

Did he not search at all? Did he search only in his own bellybutton and find nothing but lint and a few old pennies? Or did his own cognitive dissonance just keep him from admitting to being trapped in a massive NIH black hole? Saying he found nothing is being dishonest because he either didn't bother looking in the first place or he ignored what he found.