This could be very true OMM, and why I used to see holographic wraps on most of the drone wrap / skin sites years ago, but no more for at least a year now.
This is the type of tape I have seen some use on their drones in strips . . .
Bird Scare Repellent Tape: Holographic 45 metres x 5cm
It is described here as a 'foil', not sure what type of metal (if any) is used, but there are many metals in foils that could be used that are non magnetic (I think).
It would be good to confirm that these foils could cause magnetic issues with compass function, or prevent / interfere with GPS function in drones.
Perhaps anyone using these tapes on their drones could provide some feedback sometime when reading this thread, it'd be really good to know.
From my experience with birds, I've never had too many issies with them with my M1P (original Mavic Pro) or my Spark drones.
One time a Peregrine Falcon was having a really good go at the M1P, as soon as I saw it I went sports mode, ascended 50m above it fast, then flew back to my home point and landed with no issues.
It was visible below circling, unable to fly up as fast and then lost interest or I was out of it's nesting zone.