Seems like you’re in the UK too.

Yeah, this was never a thing until Amazon made it one.

Thankfully, the law is very unambiguous about this, and if a parcel is left outside and then stolen before it gets into your hands (unless you specifically asked for it to be left outside) then you are entitled to a refund or replacement.

Amazon play the numbers game and figure that replacing x number of packages costs less than needing their drivers to bring all the undeliverable packages back and try again a different day.

It’s not a cool precedent though and I very much dislike it being normalised.