It doesn't seem terribly strange to me. I've seen the occasional reference to Stoicism and/or The Meditations on here before, and on other sites that were geek/hacker centric, going back quite some years now.
"I was shocked to come back online after a couple of hours and find this at the top of the front page"
Well mindcrime, Stoicism has been on my mind for well over 20 years, and I'm simply agreeing with your "shock" that a simple link to the Meditations is on the front page.
Let me assure you, this level of recognition of the very word is new. It may be only the Tim Ferriss PR machine, but I think it's more than that.
Geek/hackers that I've come across over the last 30 years have much more in tune with such awful hackneyed dungeons and dragons/Tolkien crap than anything so sophisticated.
Fair enough. Me using the word "shocked" might have been a bit of hyperbole, maybe I should have said "surprised". But nonetheless, I'm not shocked to see some meaningful interest in this subject among this crowd.
Of course, I'm FAR from an expert on this topic myself, and one thing I'm really happy about, from this thread, are all the great links and suggestions for other reading material.