I don't understand Hacker News. Tim Bray's post on Break Up Google was buried and not visible on HN's front page. The next day this on Visa-MasterCard post show

I don't understand Hacker News. Tim Bray's post on Break Up Google was buried and not visible on HN's front page. The next day this on Visa-MasterCard post shows up on the top with a "forget Google" comment. Why? Is this a result from the community or the algorithm? HN seems to have changed a lot in the last few years.