I think the parent is referring to the fact that some browsers warn about your blog including unsafe scripts (try to load your link in Chrome or Firefox for e.g.). While this is concerning, I wouldn't go as far as qualifying the article as blogspam though.
Fwiw the mixed content warning is from VideoPress, which is also used in the WordPress.org announcement and also throws the same error. That said, I reported it to the right people and it's likely getting fixed across the board. So while I highly doubt that's what the commenter was referring to, your followup made the web just a bit better, so thanks!
