Forgive my ignorance, but I'd think the lower gravity would actually reduce buoyancy, so a lighter than air vehicle would have less upward force, while being at

Forgive my ignorance, but I'd think the lower gravity would actually reduce buoyancy, so a lighter than air vehicle would have less upward force, while being at the mercy of high winds. At the same time, less gravity makes it easier for a helicopter because less lift would be required for a heavier than air vehicle.