So someone is teaching "guard passing" as a bujinkan thing? If a westerner then it is probably BS, if they are saying it is from the 9 schools. If soke showed something similar it could be using the taijutsu priciples/mechanics, but would not name the waza and pretend it is from the schools. I somehow doubt it.
Well, for the record, I've seen Hatsumi teaching things like guard passing (and variants upon that), as well as other teachers in the Bujinkan, but are you saying that if a Westerner showed it, it's BS, but if Hatsumi did it, it's fine? Seems a bit of a double standard... what if the Westerner teaches it as an application of the principles/riai/heiho of, say, Shinden Fudo Ryu, but Hatsumi teaches it as part of Shinden Fudo Ryu, but ignoring the riai/heiho of the Ryu? Which is BS then? How about if the Westerner has trained in BJJ to gain an understanding of the context of the ground as a range, as well as gain an understanding of what works and what doesn't, and then goes on to adapt those mechanics to the Ryu they're exploring? Is it still BS? Is it still BJJ? Or is it now more Budo Taijutsu, as it's been imported and adapted to fit the framework, even though it wasn't expressly from Japan?
The idea of it being a Westerner, therefore it's BS, I feel is a dangerous concept to cling to... especially considering some recent announcements, and the implications for the future... I mean, I've seen Japanese instructors at the highest level completely miss the principles of the Ryu they're meant to be showing... so to assume that, just because they're Japanese, they're getting it right, but Westerners aren't, is just going to lead you to miss what's really happening...
There is a difference between "made up" and "not previously taught"
Now, that takes us into a range of controversial concepts...
In the early days soke taught things under the umbrella term of togakure ryu, when in fact it came from other sources within the schools. Look at the TCJRNM, it only contains snippets (at best!) from each school, not the shoden, chuden etc etc etc of each school. Another example is "koku", originally shown on the "togakure ryu" videos, but does NOT appear in the togakure ryu densho. However it is the first kata from the Joryaku no maki level of gyokko ryu.
Except that's a completely different idea, and completely misses the point.
While it's true that the Togakure Ryu name was originally used to refer to the entire collection of material found in what's now called the Bujinkan, the reason for that was that Togakure Ryu was the first Ryu that Hatsumi was granted Soke-ship of (1968, he then promptly awarded Menkyo Kaiden to Tanemura and Manaka... Hatsumi himself was awarded Menkyo Kaiden in the Ryu in 1959, less than two years after meeting Takamatsu), so that was the "titular Ryu" for what he taught. It should be remembered that, at that point, Hatsumi was realistically running a training group for Takamatsu, rather than necessarily teaching under his own authority... with his being awarded Sokeship of Togakure Ryu, he was then able to do things under his own authority. Same as with Toda's dojo using the Shinden Fudo Ryu name, but multiple arts being taught (albeit apparently not particularly openly), or the Shinto Muso Ryu being the titular Ryu, with Ittatsu Ryu, Ikkaku Ryu, Uchida Ryu, Isshin Ryu, and Shinto Ryu Kenjutsu all being taught there, the idea that Togakure Ryu was used as a single name, even if what was being taught wasn't completely from that Ryu, isn't an issue. On the other hand, the teaching of things like Iai, which is not found in any of the Ryu (except in the claims of a very few in the Bujinkan... no other lines contain such waza... and the claims made are not verifiable in any meaningful way), would be more an example of something being added, or created... same with a range of other methods...
As far as the Ten Chi Jin, Koku etc, that's really besides the point... again, those videos date from the usage of the term "Togakure Ryu" to refer to all the teachings. "Bujinkan" was originally the name for Hatsumi's personal dojo only... it only later was used to apply to a larger group of dojo's, beginning with Hayes' move back to the US from Japan. Since then, Hatsumi's personal dojo has been named the "Bujinden", of course, and the application of the Togakure Ryu name has been removed as an overall title.
Can you give an example of some technique, by name or just by description/video that you have seen presented as explicitly Bujinkan that you believe to have been "added" around the time BJJ became popular?
Honestly, I'd show you pretty much any Kacem Zoughari clip... nothing to do with BJJ/groundwork, but still quite a bit that seems added... to say the least.