Not accurate at all. My birthday is in April, and I am not a 2/10. I am a good cook. I enjoy cooking and experimenting with food, herbs and spices. If it was baking, I would say I'm a 2. I can't even perfect a Graham cracker crust!
4/10 That's about right. I can sometimes reach a 6/10 but overall, 4/10 is about right. Everyone that I cook for will be fed, no one will go hungry, but there usually is nothing special or memorable about the food.