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This provision applies to online and distance selling purchases so the buyer has the opportunity to inspect, then accept or reject the goods.
It does not apply where someone has made their purchase in person and especially where they have not relied on the expertise of the seller.
Where someone has knowingly selected a product and moved forwards with a purchase they are liable for any resulting costs.
Their only remedy would be damages if they can show a good faith basis why the product is not as expected, or performing as expected.
Given the experience of 2025 there was no reasonable basis to expect 2026 to be other than what it is and so the liability remains with those who elected to continue engaging with this year and its related consequences.