I wonder how many have heard of or better been taught
cadence braking which when performed in a practiced manner maximised braking action in conditions of minimal grip by taking advantage of retardation
before tyres completely lost grip then quickly repeated in a dabbing action. In so doing, as well as stopping in shortest distance, it allowed some degree of steering in an emergency.
ABS simply seems to be an automatically applied and electronically monitored version of this efficient form of braking in marginal grip conditions.