Is it? Numerous people up and down this thread who do use the official one have told you they've not experienced it, so I'm not sure your assumption holds.
They’ve not experienced the issue when touching a magnetic card to the magnetic side of the wallet, or they’ve not experienced the issue when placing the card in the shielded section? Because what I’m saying is the former is unfortunately very easy to do, and that would be easy no matter which brand holder is used.
Is it? Numerous people up and down this thread who do use the official one have told you they've not experienced it, so I'm not sure your assumption holds.