They haven't dumbed it down, they've listened to feedback, not many people thought it was good, they thought it more annoying, which it kind of was if you forgot to pick up a new gun - which wasn't often as safehouses were everywhere. If they'd fixed the stealth and increased the checkpoint respawn time it would have been more amazing, if people finish the game they'd love it, but it did kind of grate.
The malaria stuff was odd, I never had any medication but nothing bad happened.
Also, gtav has no release date yet and nor does this, so it could do well.
...and if you tell that to the kids of today, they wont believe you!