That’s not actually true per se and is a common myth. It is not the same across all areas of the EU. It’s easier to write the minimum available warranty for any destination than potentially cause issue by listing each region’s implementation of consumer directives.
Remember as always that any warranty offered by a company is a supplement to the standard consumer rights applicable in your destination country. It does not supersede or attempt to reduce these rights.
For example, in the UK, if there is a design flaw you have six years. The EU law is surprisingly weak, as in almost all cases you would need to report your defect within two months of receipt.