I read this question What spells can be countered? on HNQ and was quite surprised.
It is a long time I played MtG, but some 10+ years ago I was a somewhat enthusiastic player in our local town, participated in a number of official prereleases.
It is possible I am mixing something up, but has it always been that Counterspell could target (technically) any card on stack?
As far as I remember, the players down here used Counterspell as if it only could target sorcery and instant spells on stack. So you couldn't target e.g. a creature or artifact while it was being played. It's been a long time though.