as you know, little 'nobs is the same age (just turned one) As regards to what they "can" eat, by about 1 anything goes except peanuts and (i think) unpastuerised cheeses. babies are all different in what they can physically manage to chew at that age (i am still spoon feeding her and things are still quite mushy - she doesn't have any teeth yet)
As to what they "should" eat, well who can say. I would like to give my baby a good start to healthy eating (that i never had), so she has always had either the food i've cooked especially for her, or if we are out or for convenience, one of those pouches you get. Poor little love has never had chocolate, and has only ever drunk water or milk (or for a brief spell last week, diaoralyte!).
as an example, today she's had porridge for brekkie, and i sent her to nursery with home made salmon and corn chowder, a yoghurt and some bread and butter plud breadsticks. When she comes home tonight she'll have home made chicken curry. We are just starting to introduce her to family foods (i made a shepherd's pie the other night and did a mini one for her, but used baby stock in the mince (less salty). TBH i wouldn't giver her that food you described, but who is to say i'm right and she's wrong? At the end of the day, they are her parents and it's up to them i suppose. i don't think it's all that helpful to talk to them, it seems unlikely they'll change. The good thing about giving them a varied diet (IMO) is that they'll be much less fussy. Phoebe has never rejected anything (yet)