Except for the self defence bit. That just made no sense. I mean what does kata produce that is specifically applicable to self defence?
Ah well we could tell you but then we'd have to kill you. Why do you expect kata to 'produce' anything, it's not a chicken laying eggs. You don't do kata so don't worry about it, but you can't criticise something you know nothing about, it's just hot air if you try. I would be like me criticising Aussie Rules, I've seen it on television but don't know the rules, players, teams etc so of course I don't say anything, you should consider doing the same about kata.