Goodness you are entitled to call out which ever arts you feel though I had heard this notion in particular that Aikido was exactly such an art that required some mystical level of adeptness before one even dared to imagine oneself competent to use any of it.. I do not understand how this myth originates.. or how the converse implication would work that I can walk into some other not-Aikido training place and walk out after two hours and be able to throw attackers off walls or put them through the ground?? I mean like does every art not require a minimum of time before the techniques can be reliably and consistently applied in a variety of real situations?? this applies to all arts and styles none are different in this respect yes??I don't want to call out any arts by name. For one thing, any art that I actually trained long enough to speak authoritatively on wouldn't be one that I thought had that flaw. For another, the method of teaching an art can make a big difference and that can vary from school to school.
In general, I would say that if a martial art requires 10+ years of dedicated study to be used effectively, then it might be making unreasonable demands on the practitioner.
More specifically, I would say that an art which fails to degrade gracefully has problems. This is a concept from engineering - the idea that when part of a system fails, the whole thing shouldn't fall apart. If I can function with a proficiency level of 10 in the dojo, but then I get in a real fight and under pressure I lose 30% of my technical details, then I should still be fighting with a proficiency level of around 7. If I can't use my art effectively at all when I've lost that much of my technique in an adrenaline dump, then there's an issue and it's not just my fault as a practitioner.
My Dad studied human factors. Alien factors is a whole different department.
I very much like your point about graceful degradation.. I had not heard this term used previously in context of martial art.. did you theorise this your self?? I think it is a very insightful way of thinking.. thank you for sharing this x