This is shocking to people who live in the suburbs. People in big cities are used to being around people and understand that they are “neighbors” to all people around them. Suburbanites are terrified of strangers and cities because they can’t fathom not driving a 4-ton SUV to a parking lot as a precursor to anything in life.
I did this today with the crazy snow we got in New england… my neighbor is dumb and left his cars on the street. We got 22+ inches of snow. He has a shovel, I have a snow blower. While he was shoveling I just joined him and moved all his snow in 1/4 the time. I didn’t say anything. He thanked me and I nodded.
As in introvert this is exactly how I envision most of my ideal interactions working.
I have done this more times than I can count. People with strollers trying to get up subway stairs, very often expect those around them to help, and usually someone does.
Just a part of city life
One time in London (in the Tube, if I remember it correctly) I actually saw somebody telling somebody else off for just passing them on the stairs and not helping.
This is the way
This is such a typical NYC thing. Same happened to me when dragging heavy luggage from the subway to an elevated track while the heat wave was going on and the escalators and lifts were broken. Dude just grabbed one end of the bag and helped without a word and kept walking
I have done this before but I was sure to make a hand motion imitating lifting and raised eyebrows first, and wait for a nod. No matter how much someone’s struggling I’m not going to assume their ok with me touching their stuff or putting my hand near their kid. We goblins can’t be too careful.

