Is this really that bad?

my niece was very sick when she was born and when she got old enough to eat solids the doctor told my sister to let herhave anything she wanted to get her weight up, well when i had my daughter she got to the point where she wasnt wanting to eat and i asked my doctor would it really b horrible to give her hotdogs, even tho i no there shunned apon, and she said it was ok, because if thats all theyll eat its still a protein and you cant just not feed em, so as long as your gettin some nutrition down them its ok, also i used to use those pediacare vanilla shakes and my baby girl loved em! very good for a snack