This assumes we are talking about what is known in the US as parallel parking, i.e. parking on a street and not parking in a parking lot. Parking lots are the norm in the US.
I don’t think we are. I’m talking about reversing into a parking space in a car park (parking lot). It’s generally accepted to be safer for the reasons I highlighted. That’s why I think calling it “selfish” is bizarre.
No, no, no. You completely missed the points here. And no, parking lots are not the "norm" in the US. Both parallel parking and parking lots are common in the US and in the UK as well.