What if blue throws a body kick, red side steps and catches the kick and moves in at takes blues standing leg off balances him but doesn't floor him who scores higher!!?

blue scores the highest because he is shown to be the stronger boxer (balance, control) because he had his leg caught and defused the attack to take him to the floor

all rounds are scored.

just the last 2 are watched closely and both boxers should be going out to win these last 2 rounds to finish the stronger boxer

i think its done to build the fight up for spectators too. notice how with each round of fighting the music tempo speeds up building for a spectacular last round crescendo.
other theories are placed on the effect it has on gambling

regardless i think with a basic understanding of the rules and what scores its fairly easy to see whos won or not.
its just when a fight is close that it gets complicated, but then again what sport isnt in that circumstance!

thai boxing is bespoke in its rules, scoring, the pace and timing, the fact that it has music etc.
instructors/fighters/students in the uk have a better understanding of the scoring now than ever, its still a way off reaching your average spectator but its not going to be a quick task.