This thread is started with the basic question of:
Can Airbus utilize Side Slip Landing Technique? and if not Why?
(side slip landing technique for this discussion means to establish in a side slip prior to flare)
Though it is reemphasized that Airbus recommends crab-decrab technique for landing in its FCTM. The reasons for that are possibly in this thread. These valuable explanations may ease the minds of those who are transitioning from the side slip technique.
Once again many thanks to those who had contributed to the search for this answer, especially the explanations. I have gained much. Thanks also to those who had given their inputs for the use of the different landing techniques and why not the other. I learn no less.
Many has and will continue to chant the mantra, the moment you cease to learn is the time you cease to fly.
Cheers to the camaraderie of aviators.