My view has long been that context training (in this case, training specifically for SD context) makes a difference, but not the huge difference often thought by SD folks. If you took a competition-only BJJ guy and had him focus for a while on SD context, maybe his edge in SD improves 10% (to throw out a number) if he has already been training for reasonable variety. If he has been uber-focused on what wins in BJJ competition (as opposed to wider competitions), the context shift probably has a bigger effect simply because it opens up more stuff to work on.I would disagree with it being a "correction". Gracie Jiujitsu's roots are based in self defense, and they used the competitive side to market their system to the masses. What you're seeing now is more like what you see with TMA and sports, where you have groups that want to adhere to the traditional way of doing things, and then you have groups that give the finger to tradition and want to push the competitive side of the art. However, none of it is for anything other than economic purposes. The Gracies adhere to old school Bjj because their schools simply aren't competitive on the sport side of things (Renzo's schools being the exception), and instead of embracing attributes that would make them more competitive, they stick doggedly to old school instruction. I mean, when you have someone like Rickson Gracie saying that stuff like the Berimbolo is BS, that simply carries a lot of weight within the community. However, pretty much no one believes in the invincibility of the Gracies anymore, and acknowledge that when you're looking for competitive Bjj, you might not want to attend a Gracie JJ school.
To their benefit, there's a huge market for self defense, and Gracie JJ schools are getting a lot of money from LEOs and other groups for what they teach. I mean, whenever I start training again, I'm going back to a Gracie JJ school because I have no interest in competitive Bjj, and I'm only looking for self defense at this stage in my life.
With that said, the sport-based Bjj groups have an argument to make that their version of the art is useful for self defense as well, and it's hard to argue against them. Some of the attributes developed from sport Bjj is very applicable to a self defense situation. The escapes, inverted Guards, leg locking, mobility, wrestling-based takedowns, submission chains, etc. isn't anything to scoff at. It also helps that a lot of sport-based Bjj practitioners have moved into MMA rather effortlessly.
Anyway, you feel that BJJ is limited self defense wise and could learn some things from traditional JJ. What would you say those techniques are?
I think this difference becomes more obvious in the other direction. Because a given competition is (aside from a few notable exceptions) a narrow context, folks training only for that context will probably tend to have a large advantage in that context. They simply aren't spending any of their traininig time on other things, so have more time to focus on what wins that competition. Exceptions likely exist, but I'd expect that to be the general rule.
So, counter to some claims, I don't think sport training is generally so narrow it won't transfer to SD situations. Some of it won't, and may present obstacles to application in SD (like tap-point fighting), but most of it will - especially stuff like MMA-focused training.