It is a good article, but the title is a bit misleading.
It is not a new technique as such, as the educator cited correctly indicates. Instead, the article dedicates itself to an appreciation of one of the simplest, most intuitive ways of arriving at a very slightly simplified form of the Baskara formula from scratch and explaining the logical implications of the method.
Good reading and very much worth spreading, but far more impressive for the quality didactics than for any "new findings".