I’ve never gotten into the comics and one of the reasons is it’s hard for me to be invested in the results of a story I know will just get reversed at the earliest convenience.
I would lose a lot of interest in MCU if I felt there were no consequences and whatever happens gets reversed the moment it becomes inconvenient. If they are going to reverse a death they better at least earn and justify it more then “Oh he’s magically alive because we didn’t feel like him being dead anymore”.
…..and that has been one of the biggest criticisms of comic books over the past 20+ years; they have no value when once important, character defining deaths are erased because a publisher (or hack writer) thinks a character was too popular to leave in the ground, or they need another "shock" gimmick. The same thing would happen to the MCU if Black Widow or Stark retuned to life.