Oh yes, definitely it is an artistic endeavour. It is similar to, say english, which is also an art. Of course you have spelling, grammatical rules and so on, but good writers can produce bestsellers while bad writers can't. Also new words are added to the language every now and then.
If martial training is not an art to you, what is it?
Your story doesn't make a lot of sense actually.
An internal art is different. Let's take for example this time the chinese sword. An internalist would not be practising the sword by repetitively doing any specific thrusting or slicing movement to gain muscle memory. Instead, when the internalist moves the sword around, he pays full attention, not to any specific technique, but rather his body external and internal balance, breathing, his mental focus on the sword etc. if he extends the sword to the right, he must make sure to adjust his balance externally (by extending his other arm and adjusting his stance) and internally (imagine balancing yourself on one foot, feels like that).
I can tell you quite emphatically that many if not most karateka move exactly as you describe yet you describe it are 'external'. I'm not sure you understand what karate for example actually is.
Oh yes, definitely it is an artistic endeavour. It is similar to, say english, which is also an art. Of course you have spelling, grammatical rules and so on, but good writers can produce bestsellers while bad writers can't. Also new words are added to the language every now and then..
Absolutely not, English isn't an art it's a language. Good writers are that because of imagination, practice, talent and a few others things. Writing is the art not the language. Being fluent in a language doesn't make you a good writer. I think this is why you are confused about other martial arts