The landing involved quite a surprising amount of yaw upon hitting the asphalt. I would have thought that straightening up on touchdown was the mark of a skilled PIC.
Depends on the airplane... Some are landed in a crab, some are landed with wing down and top rudder, some are landed with a combination. For most/all, the MOST important thing is to have the velocity vector straight down the runway on touchdown. Heavy airplanes will straighten themselves out if landed in a crab.
While some pilots advocate "kicking out" a crab, that may introduce instabilities that you may not really want on touchdown...