I'm not sure if you're joking or not, but there are sequels for characters that died in Infinity War already announced - so we knew from the moment it happened that at least some of them are coming back.
I love the Marvel movies, and the people that don't are missing out IMO - nobody has ever done anything even close to this. There are some continuity issues, but overall what they're doing is nothing short of amazing.
At first knowing they'd be coming back bothered me - but a lot of the originals have their contracts expiring after Avengers 4 - so the logical thing is that they will have to sacrifice themselves in order for the newer characters to return - so there's still going to be some consequence. And honestly, it'll be a lot more painful to watch Iron Man bite the dust than it was for me watching some of those newer characters who I'm not emotionally invested enough in just yet.