Digital evidence is really easy to fake, often leaves little if any evidence that it was planted, and the prosecutors don't have much incentive to look for evidence to determine whether the digital evidence was planted or not.
A good analogy is imagine if dry cleaners were paid by the FBI every time they found a dime bag accidentally left in someone's pocket. How many of those dime bags do you think would get planted by the employees to collect their $500 reward?
Digital evidence is really easy to fake, often leaves little if any evidence that it was planted, and the prosecutors don't have much incentive to look for evidence to determine whether the digital evidence was planted or not.
A good analogy is imagine if dry cleaners were paid by the FBI every time they found a dime bag accidentally left in someone's pocket. How many of those dime bags do you think would get planted by the employees to collect their $500 reward?