In that series, Thanos assembles all the Infinity Gems and threatens to destroy the universe, and The Infinity Gauntlet is essentially comic book source material for Avengers: Infinity War Part I and Part II. (vox.com)
Sure its comic book source material with the larger than life figures, exaggerated and surreal action, and supernatural aspects means that we're not expecting a conventional western story, but whatever happened to plot logic, even rudimentary character development, and attention to basic narrative structure? (thedigitalbits.com)
From Wikipedia (on the comic - book source material which is impossible to tell if they radically rewrote the film or not, so take with a grain of salt): (rowthree.com)