If you can't keep the aircraft pointing straight down the runway with crossed controls, the crosswind is out of limits.
Yes, but only for the crossed controls method of drift control.
Crab or crossed controls down the approach is personal preference. It's short final that matters. I think this 'kicking it straight in the flare' business is a form of madness.
That is a very myopic statement, I have used the kick it strait method with out of the normal strong cross winds for many decades and have never lost directional control yet on any approach or landing.
What do you do if you arrive at your destination and the cross winds are way, way above the demonstrated cross wind for the airplane you are flying and there is no where else to land?