This is how it feels when people meltdown over new TB trailer.
I too clowned over Endgame promo like that. Because by that point Steve and Buckys arc has come such a long way, shown the depth of their bond and given good maturation to their own arcs.
Then we were slapped with that absolute horrible garbage pile of the ending.
I'm being realistic here. No one actually expected Steve and Bucky to be a couple onscreen. But all expected Marvel to honor the character development, the recovery they had and honor the very visible palpable bond they had. Let their 100+ year saga conclude in a decent way. Rest of story could have been lleft to interpretation.
But they did that to Steve, the first avanger, the blueprint of every heros morals in mcu. They actively ruined his arc and I still believe it'll be someday clearly interpreted as an act done to counter the homoerotism recognised by fans.
So no, I don't think they will go beyond baiting this time as well. They know what the size of the fandom so they bait.
Same people call Bucky an antihero which had been refuted clearly. They don't care about our beloved characters.
If anything there will be more heartbreake. At least I never watch anything by mcu since that clusterfuck.