It may have something to do with the fact that Mars' atmosphere is very, very thin (I think they mentioned it's 1% density of Earth's), so there are much fewer

It may have something to do with the fact that Mars' atmosphere is very, very thin (I think they mentioned it's 1% density of Earth's), so there are much fewer particles hitting the ground and pushing the dust, compared to e.g. a small hobby drone taking off here on Earth. I'm sure there was some dust thrown up in the air, but probably not enough to be seen against the background.