The Lifehack article, by James Clear, is the source of the confusion. Clear takes Allen's Two-Minute Rule as the first part of his own Two-Minute Rule, the second part of which is something like Allen's Next Actions. It's a mess. The article posted here rehashes the second part of Clear's rule, completely divorcing the name of the rule from its original context.
Yeh you’re right. But the other element he’s throwing in is Fogg’s Tiny Habits. So it’s those three combined, in such a way that he makes it his own, and as demonstrated here, achieves a bit of erasure along the way.
Also - that life hack article - he’s published that same stuff many many times before. It’s basically an extract from his book. He republishes it every where. And it works, he takes ownership of the idea in people’s minds.