so why did they tell me "the jetpack is not a vehicle within the game" when i asked about a bug relating to my jetpack?
Rockstar support doesn't know sh*t about game play story/mission problems they are not there for that they don't sit there with a big book of gta5. They are technical support for bugs, glitches and other technical issues and would not be privy to this information, especially if its supposed to be a secret conspiracy kind of story game play problem. They would have strict rules about releasing info on gameplay info anyway or they basically would be offering a walkthrough of the whole game!. Plus 9 times out of 10 the just reply with a generic email reply because of the embargo/ restriction of information they can release. The Likelihood is only a hand few of the games devs and higher up creative producers and art team know the whole story.
Basically I'm saying rockstar technical support emails are not concrete proof of anything gameplay related.
dont worry ill give you the standard reply
"it doesnt say that, you faked it"
I think the argument would be they have a specific list of information, so rockstar support employee cross checks jetpack with all of their available information to disclose and give the only appropriate response they can based on the information available to them, it's likely a lot of the employees haven't even played the game, I'm not saying there IS jetpack though just trying to make logical sense of this, obviously I really want there to be a jetpack so it colours my opinion largely, but I think theres a strong case to be made that it is in the game and the support team don't have the jetpack listed in the information available to them, but theres also equally a strong case to be made that your assumptions are correct. Regardless if there is a "prize" when we get it it'll be an anticlimax, but its the search and the mystery thats exciting to me, especially when its coupled up against conspiracy lore. If it did turn out rockstar were trolling with the mural and there was nothing to unlock or it was future dlc id be annoyed with them but so what they wouldn't care less what I think I guess. Personally if it turns out there is something to the conspiracy (honestly I believe it is, conspiracy lore, alien hud, game files, jetpack on the mural when fans really like the jetpack) it'd add a whole new level to a game that is already amongst the best of the current gen, probably be the coolest most elaborate game secret of the past 10 years and it'd elevate rockstar to beyond legendary status.