i think its because like you say , you do it for real so its not a fantasie anymore.
i beleive most guys have the (fantasie) to fight and beat up somebody , something like that.
When you do it or get close to it as much as possible like you say , most of the time you realese you would not like it to happen and realese the danger of a fight and that its not a pleasing feeling to hurt an other person( for most people

) .
most of what is call traditonnal martial arts have been developd during peace period so in a sense they are full of fantasies based on how cool it would be to beat somebody in a very stylistic combo of 5 attacks or hitting in all directions 6 guys surrounding you whit cool and very exotic moves.
but techniques even if they are ( simple) i think have to be reapeted and corrected always if the person wants to get better , i think they have to be choosed carefully to cause i beleive the saying less is more is very true in fighting.
i ask myself not how many techniques i know but rather how much techniques i have mastered ( mastered is % of failure almost inexistant in a technique lets say) cause when you fight or just when you spar hard you understand fast you cant affort much failure.
sooo all that to say that s why i think techniques are very important but i get what you mean that its as much important to use them under not just pretty situations
ok im done

later Luis