Consumer products, their warranties, and their extended warranties work in a predictable way.
Warrant-able implies, but does not guarantee, High Quality:
Consumer product makers build high quality products. You can tell because the manufacturer is willing to stand by their products and repair or replace them (but only for defects in materials or workmanship) at manufacturers expense for a stated warranty period.
For Apple Macs in most countries, that period is one year. That is the total responsibility Apple or any manufacturer has to you under law. Assumptions about additional responsibility of Apple or any other consumer product-maker's products working longer than the warranty period are not accurate. The amount you paid for the product has no bearing on this. The rules are the same for a car costing US$20,000 or more.
Other than Apple, Inc. the only authority that can declare an entire product "defective" is a court of competent jurisdiction. To the best of my knowledge that has not occurred.
Instead, consumer reports magazine reports that after surveying their members about reliability, year after year, Apple computer rate higher than any other computer maker by a wide margin.