I have those and have used them for 8 or 9 years. Met the man who invented these for trailers. They were originally called "Wayne's Stabilizers." They're not difficult to use at all. The first time was the worst, trying to figure out the proper length for the ratchet tie down. Once that was determined it is easy to duplicate time and time again. I carry the stabilizers inside the trailer, under the toe board in the kitchen. No road rash and my hands stay clean! Because they're aluminum, no rust either.
Because the legs aren't "fixed" if I camped in an uneven site, each leg found its natural position.
There are many, many ways and products to accomplish the same thing. Are these stabilizers perfect? No. For that you'd need to get the BAL Stabilizers
Everyone is entitled to an opinion. But before you DISS something, you might want to ask if anyone is happy with their choice.
If we always stayed with the tried and true... there wouldn't be any all-molded-towables. Something to think about...