I have two DS three years apart (8 and 11)
For ease and harmony I generally treat them both pretty similarly so the younger sibling gets rolled up into activities, responsibilities and freedoms I wouldn’t have given the older one at the same age.
Talking to a mum of a friend of DS8 who is their eldest, I fear she was quietly appalled at some of my parenting. For example leaving DS8 in the house alone while I go to the shop for 5-10mins (he likes it and is sensible) - would never have left my eldest at that age but DS8 has got used to being left for short periods with his older brother so it didn’t feel like a big step.
Is it just natural that a 8yo who is the youngest in the household will get dragged up a bit faster than one who is the eldest? Or should I be doing more to lay different ground rules for my DC?