So funny to hear that this isn't actually a thing
Maybe she only shops are expensive organic stores and they have cup holders so she thinks it's like this everywhere in the country
Also, who brings their coffee to the grocery store... ? Especially when you know she first went to a coffee shop to then bring it to the grocery store. To me, it screams "I'm pretending like I'm super busy so I have to drink my coffee while shopping but in reality I have nothing to do all day and the grocery shopping is my only activity of the week and I spend 2 hours there".
All this Karen behaviour is really cringe