Its an issue because a lot of people have been having a hard time setting up the cold storage masternode... the wallet still needs to be connected to the masternode during setup and can be in danger if not secured properly.
In theory you are correct that the new system will be MUCH safer. However many people do not have the technical expertise to implement it properly...
If they don't have the technical expertise even to follow the cold wallet masternode setup instructions, they shouldn't be running a masternode.
If you didn't know how to lock your safe, would you store cash in it?
Unfortunately as we have seen, people don't like that advice and refuse to listen to it. At least one person has lost 1000 DRK as a result. My guess is at least 5 more MNs are compromised within the next month.