Sounds legit to me.
But i hope it has limits. I can't be found in lobbies with infinite jetpack users.
So many worriers like you... I swear, you guys would request R* to not add weapons in the game if they weren't already in it, with the logic that someone would abuse them online with infinite ammo hacks.
Oh no! They're adding something to the game!!! IT WILL BE ABUSED!!!
Given the modding skills within this series, a jetpack could have been feasibly added without R*'s help anyway. There's certain risks you just have to take in life... like if you play a game online, you are probably going to end up running into a hacker. That's just life, eh?
No, it isn't. It's just a game. When you die, you come back. Chill!