1. If someone looks at the photo and decides it's you then that can be forged - my picture with your printed details.
Yep as is the case with any photo ID.
2. If someone compares your biometrics with those on the card then that can be forged - my picture and biometrics with your printed details.
No, The details on the RFID would differ from printed details and should be picked up. You cant change the details on the RFID without corrupting the checksum.
3. If someone validates the card against the database, that can be forged - my picture with your details and biometrics on the card.
If as intended the biometrics are checked you it would fail - I dont look like you and my fingerprints/iris is different.
4. If someone takes your biometrics and compares them to the database... why bother with the card at all? It serves no purpose.
The card serves the purpose when biometrics are involved in validating who you claim to be.
The above points are aside from the issues - if what you said above was so simple it would not be adopted in the first place.