Would if fair to say that because each Kata is a complete fighting system in their own right and because different kata's focus on different principles; however with a lot of overlapping techniques that studying one kata deep enough could arm a person with enough skills necessary to deal with any type of self defence situation ?
Now if we were to study that one Kata while also practicing all your basics and other drills would that be a sufficient formula for self defence ? We know that no matter the kata if applied properly it's going to put the opponent in a vulnerable position. So how many kata do we really need to study ? It's an interesting question that has been discussed before. Maybe one or two is plenty if studied correctly. So why do we feel the need to have 10 or 20 to learn ?
I do get the idea of alternative ways of looking at things and other options for techniques ect, but if this method is good enough for the old masters why not us ?