As a kid if there was something in the stairs I didn’t carry up I’d absolutely be screamed at. Now I’m mom and no one but me does it and I do find it annoying. I will FULLY block the stairs with laundry baskets and have asked many times for things in the stairs to be carried up and people will do gymnastics to get around the stuff… still don’t scream or be a jerk about it though.

Someone else mentioned it’s a tripping hazard, lol that’s the point, don’t want to trip, move the stuff, if you trip you had no one to blame but you and your own laziness, myself included lol