It's old. Google has god-awful mobile interfaces on most of their services that always either redirect you to something different or require you to log in and then redirect you to something different.
Yeah, that's dumb. If I select "request desktop site" in the Android browser I can see the post, otherwise I'm redirected to a sign in. You only get the redirect in Android Chrome, since it doesn't have a "request desktop site" option. Annoying.
Ahh thanks for this extra bit of info. I use an iPhone browser which lets me select my user agent, so in cases like these, I tell it to pose as Safari on a Mac. With this, I was able to read the post.
On the tablet Google actually wants me to create a Google Profile before I can read the article.
I've never run into this before today. I wonder if its new.