Correct me if I am wrong.
Well, I don't know the current situation, but some years ago, gmax stated that core no longer verifies back to the genesis block, relying instead upon a centralized checkpoint as 'good enough'. Still downloaded, just not verified. Weird.
I'm sure that there is more to the gmax description of the bitcoin blocks verification situation than your summary is suggesting, jbreher.
Well, JJG is 'sure'. I guess that settles that.
Yep... and you did not provide the details and even admitted that you were summarizing.
Gmaxwell usually explains technical ideas decently well, and your summary (from a potentially selective memory) seems to leave out bits and pieces of details (perhaps with a purpose to leave fear in the reader?)... Your vagueness does not really surprise me.