We have a MagDrone R3 and when researching it I saw a video showing a comparison of GPR and Mag sensors. The Mag sensor was able to detect the foundations of a buried roman structure as clearly as the GPR in that specific case. So, the answer is yes, this class of remote sensing can be used in archeology.
The article mentions the ‘traditional’ way in which magnetic surveys are carried out on the ground in archaeology. When it comes to helicopter surveys, the examples are only from geology. My question was meant to refer to helicopter surveys. I would therefore like to rephrase it: Have helicopters indeed already been used for magnetic surveys in archaeology?
Please don't comment on whether someone read an article. "Did you even read the article? It mentions that" can be shortened to "The article mentions that".
You and I have different definitions of the word "bludgeon", and I see no problem with showing somebody a site rule they've broken if it's a rule you think worth encouraging people to follow (which they clearly do feel).