This is honestly the most worthless comment I have ever seen on HN. Besides ad hominem, there is literally nothing here other than a giant pile of conspiracy.
Being openly gay in the 1940-50's in some places in the US may very well have been a death-sentence. Those people would have been wise to keep their sexuality private (or move somewhere a bit more progressive). Likewise today, you wouldn't have to look too hard to find countries where people have to hide their true beliefs from repressive governments or society out of a justified fear of harm.
What I think the commenter meant to say was that the blog author is a member of (I assume) a privileged class in (again, I assume) a privileged society. The public/open lifestyle he suggests might be a worth-while pursuit for others in a similar position as he, but it may very well be foolish for those less fortunate. Context matters.
Yet that is the conclusion he comes to.
The other possible conclusion, as I noted, is that he has previously been unaware of Free/Open Source and Creative Commons based licenses. In which case he needs not talk on secrets but rather on licensing.
And given that Derek has code licensed under MIT, your conclusion that he was unaware of that license is obviously incorrect.