The wide ramps make a perilous task much safer. The struts save your tailgate from a loading failure, which could easily snap your leg like a twig if the bike fell onto you.
My GMC owner's manual says the cables are only rated for 200 lbs. Not much. I use a t-bracket in my receiver hitch which supports the end of the tailgate, and I have a piece of aluminum extrusion to lengthen the load area, and when I use that, the t-bracket extends outward to support the aluminum piece's outside edge. The only thing that is an issue is that if you have a flat, you would have to unload the bike to access the release cable for the underbed spare. If I'm just using the extension around town I gamble and leave the spare where it is. If I'm going on a trip, with the extension and bike, I offload the underbed spare tire/wheel and lock it into the bed. The extension piece came from a handicap ramp I bought for easing entry in/out of the house for my elderly in-laws, unfortunately, they're dead now. They fled Communism, a very sad story, but lived in the USA nearly 50 years, they lived to be 98 and 99. They were small business owners, she was a tailor, and he owned a commercial landscaping business. My wife always had the most beautiful clothes, and their family home looked like a tropical garden, lots of fruit trees and tropicals.