Functional buttons at the cuffs—aka "surgeon cuffs"—are another one of those signifiers of quality that's a total myth. There are plenty of non high-end jackets and sportcoats with functional buttonholes at the sleeves—while other quality brands like Engineered Garments don't have functional buttonholes on the cuffs on purpose—because it makes the sleeves easier to tailor. Details like this are meant to show the wearer's attention to detail more than than the manufacturer's. So if they're that important to you, there are plenty of capable tailors that are able to convert most cuffs to functional ones.