And that relatively compact debris site would have been a magnetic sea-bed anomaly the size of a skyscraper, even to a looking satellite. This one does make me scratch my head (and few other parts of my anatomy). I really believe the technology exists to have found this wreckage before now. Which must beg the question ‘why wasn’t it found until now’ ?
For there to be a magnetic anomaly there needs to be material with magnetic properties (or a moving body through a conductive liquid).
What is a modern airliner made of? Not magnetic stuff.
I think you want to see conspiracy where none likely exists. And that in itself speaks volumes.