Here in Germany clicking links is not hacking. Website owner is responsible for where the link goes to. Remember the link disclaimer on websites?

But typing pageId=2 instead of pageId=1 opened via link is hacking.

Clicking show page source and seeing cleartext passwords left in there is hacking.

On login forgetting to type your password and entering with an empty password is hacking.

Definetly used world wide at least since the 80s and yes basically meaning anti fascist.