No, you just need to dig deeper. The MobileMe Drive system was shut down in 2012, as your link says. However the new feature in iCloud wasn't introduced until

No, you just need to dig deeper. The MobileMe Drive system was shut down in 2012, as your link says. However the new feature in iCloud wasn't introduced until Yosemite, which came out in 2014. There was a two year gap where the service did not exist. https://en.wikipedia.org/wiki/OS_X_Yosemite https://en.wikipedia.org/wiki/OS_X_Yosemite https://en.wikipedia.org/wiki/ICloud#iCloud_Drive https://en.wikipedia.org/wiki/ICloud#iCloud_Drive