Crit fails on skill checks are a LarianBrew thing. Also, running as a Halfling is such a godsend for not getting 1's anymore that I can never play another race.
This is not true Critical Fails have been something in table top for a LONG time. True it was an optional rule but Larian is not the creator or alone in the use of this.
Not for skill checks, only for attacks.
Sorry to let you know but we had critical failure in skill checks back in the 1980s on table top.