Grok may have cultural implications, but not only the ones you suggest. My husband's computer-geek friends are extremely fond of the word. My first contact with it was on one of his daily websites (slashdot) where the word is used and understood by most of the users. I believe that I would be correct to say that most (but not all) of the slashdot readers are approximately my age (20-30ish) and were not available to read it during your flower power revolution. (i'm not a regular reader of slashdot, correct me if I have the demographic wrong.) Perhaps the word isn't quite as dated as you say, though still only used by a select cultural group.