She isn't irritating but I didn't realise that was a part of the trope.
Outgoing, quirky, endlessly positive, no actual back story, no tangible likes/dislikes, no friends/family of her own, exists only to further the plot of the male protaganist, something that other characters fight over, constantly referred to by how good looking she is and nothing else abour her person, she's willing to understand said protaganist's troubled emotions without ever speaking about her own, has no issue whatsoever being caught up in his crimes because she doesn't have her own moral compass and will just go along with him, etc. All of her personality traits can be hobbled down into her sharing the same tastes of the male lead and to empathise with him, rather than it ever being him epathising with her.
I mean, you could replace her with a sexy lamp and the plot of Baby Driver literally wouldn't change at all. It's wafer thin characterisation and Edgar Wright should really know better.