Maybe I don't know what "gusseted crotch" is, but these jeans have a large <> shaped piece of fabric sewn in right where the 8 layers of fabric come together in every other pair of jeans I have ever had. This lets the sitbones contact the seat with no seams scrunched inbetween which makes it very comfortable to ride.
wiki is your friend
In sewing, a gusset is a triangular or rhomboid piece of fabric inserted into a seam to add breadth or reduce stress from tight-fitting clothing.
__________________
"Let us hope our weapons are never needed --but do not forget what the common people knew when they demanded the Bill of Rights: An armed citizenry is the first defense, the best defense, and the final defense against tyranny. If guns are outlawed, only the government will have guns. Only the police, the secret police, the military, the hired servants of our rulers. Only the government -- and a few outlaws. I intend to be among the outlaws" - Edward Abbey