Poor is poor is poor.
So I grew up in a family that would have under that definition counted as poor I think, and there's a big difference between poor the definition and real poverty. Decent access to a pretty good local school, free education with an opportunity to go to uni and never hungry or with no electric etc.
Now at uni i have met people who had well off parents and yes they have a certain level of privilege, better schools, nicer holidays to foreign countries rather than say Canvey island, or maybe Cornwall but generally speaking on the starting out in life baseline we were reasonably on the level.
I have friends who are teachers in some schools in this country were the kids root through the bins for food and the parents have literally sold everything including the kitchen sink, shelves and oven. Those kids are so below the starting from out on in life baseline compared with us it's unreal. That's poverty,