I hear ya.....those thoughts went through my mind the past several months! I mean, how could any detector see multiple targets under the coil simultaneously?
And how could any detector incorporate functionality that offers both ground "compensation" and Ground Balance capabilities?
How could any detector that is submersible have interchangeable coils?
GPS and Mapping?

Yea, right!
And how could any detector that weighs over 5 pounds just not kill your arms or your back?

After all, 5 pounds of lead is the same as 5 pounds of feathers! :
Sure glad I didn't swallow all the "hype"!
On the other hand........
HH Randy