I read comics since the late 70s, and stopped in the mid 90s when big media conglomerates got involved. The people at the top of a comic publisher , the ones who genuinely gave a shit, were replaced by dutiful corporate stewards who lived by one evangel: Line must go up. So these geniuses had a bright idea: Variant covers. The same story, but with 5 or 6 variant covers. Nothing else special. It was the same story, no "extras", just a different chromatic 3D cover. Months later, these variants would be found in 50 cent clearance boxes. Nobody wanted them.
Flash forward to the dawn of the MCU. Many of us long time Marvel fans had dreamed of films being made of our favorite heroes and villains. In 2008, Iron Man kicked everything off, and it was a ride from there. (Author's note: I'm not going into the whole bloody timeline and all the phases, because my ADHD took one look at that wiki page and went "Aw hell naw!") All of this led up to Avengers Infinity War and End Game. This, in my opinion, was the bow. The perfect end for an amazing journey.
I'm feeling Avengers: Doomsday is a variant cover. But, hey, maybe I'm just jaded.