True mangal. The detailed people who actually implemented the card at the MHA probably know. I think this is why it took 2 years to implement. Anyone who gets the card will realise it is not DC, so eventually hopefully the message will get across.
One thing I noted ... the print on the visa sticker is not very durable, and seems to rub off. It is not laminated like the OCI card. So it might be a good idea to get a new stamp when the pp expires.
Also what if the photo is that of a baby? After 10-20-30 years, this will have no security value, so there must be a process of getting a new OCI/visa with a new photo.