No matter how much others try to improve technology to make our life easier, others will always find a way to use it for their own profit. The purpose is to help people but cons always occur because of others greediness. QR code provides easier access by just scanning it. Less-hassle, but because in today's world, evilness is growing, it cause more fear to everyone. Instead of making things easier, they will just doubt it.
Since QR code is already here to make our money transactions faster, then let's be more careful in using it and check even 5 times to verify if the address is really correct. Sometimes i do copy paste the QR code but still review it just to make sure that i am not putting a wrong address. Scammers may take an advantage when they see we are already confident on what we are doing.