I am struggling with the requirement that the dimensional total of checked/hold bags will be 62 inches or less....given the bags on the market.

Yesterday, I went shopping for a new large (30 inch-ish) bag for an upcoming trip to Europe, since we gave our old one to our son.
At Macy's, I found many that would be satisfactory in terms of features and feel, so went home to look at specs online. To my shock, every one of the large size bags I checked were listed for dimensions that totaled over the 62 inch limit! I was focusing on spinner bags with double wheels from Travelpro, Delsey, Samsonite, to name a few. Many actually totaled around 65 inches! I had to drop down to a nominal 28 inch bag size before I came up with the conforming dimensional total.

Honestly, what's up with this? Who buys these too-big bags and what do they do with them -- just use them in the car for long land trips? Really? I am sure that most people who buy a nominal 29-30 inch spinner bag intend to use it for their next air trip. If they all encountered oversize charges from airlines, often around $75 per bag, surely there would be major customer pushback!!

Are airlines not checking dimensions for hold luggage these days, just weight??