People have diffrent opinions on this, but again i personally prefer more lore, john carmack once said
"Story in a game is like a story in a porn movie. It's expected to be there, but it's not that important."
But again i disagree, to a certain degree (like for example, games like tetris does not need a story at all and games like mario (the first one) doesnt need one that much, but games like the last of us does require story)
And again before this thread becomes a full on argument, i prefer more story, but not all the time
EDIT : @HerbalSanders if the burn out thing does get added, that would mean the infected are vampires, or minecraft styled zombies i guess (not that the infected look like pixelated zombies but you get the point)