> as in Europe the default
There's no “as in Europe”, every European country is different. In France the default is also liquid form, but the pipette is graduated is kilograms of baby weight, which limit the errors you can make (you know your kid doesn't weight 15kg when his weight is around 8).
Yeah, this is another rabbit hole. It seems to be Northern Europe and Japan that do rectal pills. Some countries only recommend them as backup.
I think the mistakes also come when the child spits out part of the liquid, and parents give another dose.