These views reflect that Google Code Jam was a very significant source for recruitment. In contrast, when I searched about whether Code Jam was a significant part of Google's recruitment strategy, one of the top results on Reddit on r/cscareerquestions really underplayed the recruitment part, by non-Google employees giving advice about it: https://www.reddit.com/r/cscareerquestions/comments/p7ioku/w...
The r/cscareerquestions commenters there could still have a point that it was more direct to take other approaches to applying to the company instead of Code Jam, but the general dismissive attitude of the top-upvoted commenter (e.g.: "No benefits. If anything, might even be harder to get interviews cause the guys grinding for those contests don't have time to make a proper resume.") really overemphasized an opinion based on speculation, instead of taking a more balanced view that recognized that Google Code Jam was run with a large motivation to recruit developers.