It's all relative, and I always love to see humility, but for whatever it's worth, I think it's a safe description for you. You've clearly dedicated a lot of time and energy to the study of ki/aiki development...not to mention how to teach it. No one is beyond scrutiny of course, but like you said, we can all agree to disagree about things like gentlepersons. (that's a word right?)
To me the word master means you're done...you've mastered something. I think I will be happy to remain a student who is not nearly satisfied and remain that way. ...I'm probably going to be 80 and training somewhere trying to get better. If I can help other people along the way, well, that's great.