If you want to carry on doing what your doing, fine.
But remember, it was common practice to stand on/jump on people legs to get them into the splits (I've been to clubs where that is still practiced) - would you still partake insuch activity?
If you want to become an effective warrior there are plenty of arts that have been around for 1000's of years that do not participate in this sort of conditioning and are equally as effective.
I think there is a difference between flash in the pan and sitting down and reading around your subject and making knowledgable decisions.
I have read the bubishi and the book of 5 rings, in contrast I have read Geoff Thompson, Jamie O'keefe - further from that I have read many articles and books on sport science and how the body works, especially in regard to Martial Arts training.
I have done the reading, wide reading (including qi kung and the various feats that they partake) and I came to my own conclusion, that I want to be an effective full contact fighter and I want to have some ability to street fight (which I adapt from the sporting side of Martial Arts).
As for training, conditioning I did my homework and I am stronger and faster than I have every been, I am not a natural at MA and it's taken a lot of hard work to find the path that I am now on.
I think blindly following anything without question is bad, I questioned this topic and came to my own conclusion - that it is outdated and does not add value to Martial Arts training.
I would never have got the standard of strenght and flexibility I have now through traditional methods.