While I do remember hearing about Google Maps vehicles connecting to open WiFi networks in the news, I don't recall hearing about private credentials being published. Was that the case? I thought it was just a map of open WiFi networks that was published with basic details such as SSID?
Edit: I found the article (2010, holy cow does time fly). It looks like they did collect payload data for non-encrypted traffic. Even though the data wasn't published in any way, I must agree that they went too far. I would have no issue if they were to simply verify that they could connect and record basic info such as SSID, but collecting payload data from network requests was inappropriate.