No, it's a link to a site called "mrmacintosh". While I agree that Apple should make it easier to get the installer, I have to stick up for the person who provided the Mr. Macintosh link. He said, "the links provided directly link to the installer files on Apple's swcdn.apple.com website." That is a true statement, I just verified. Obviously he is providing a link to a third-party website, but he is saying that the links ON that website are straight to Apple, which is true. Now, if he were suggesting that we download installers FROM that third-party website, you'd have a point.

By the way, the Mr. Macintosh site (https://mrmacintosh.com) is pretty cool and certainly legit. It's aimed at IT people supporting Macs. I especially enjoyed this story about the origin of the logo and name: https://www.folklore.org/StoryView.py?project=Macintosh&story=Mister_Macintosh.txt