I hope you’re being sarcastic. If not, expecting someone’s parent to know how to use a photo app’s crop functionality just to communicate an error state is a failure of understanding typical streaming app users.
Could the manufacturer solve this in a better way? Probably but that won't solve the issue the customer has now.
Jokes aside, "upload a photo of her living room" was meant to highlight the ridiculousness of the UX. I believe the designer of that flow had an OKR to decrease the number of reported bugs.