I think a lot of them are artificially more complicated than they have to be. Since they are BJJ self defense, they all present grappling solutions to problems. However, a self defense situation is not a grappling match. I think a lot of the situations are much more easily solved using striking solutions.
For example, the famous headlock attack. Why no strike to the groin of the guy headlocking you? Drop your base, and it's right there. Hammerfist up into it from behind. That's the simplest, easiest way to get the guy to loosen it up so you can escape. I mean you can mess with all the other escape stuff too, but that's like the backup plan if just hitting to the groin doesn't get a reaction. Yet it's completely overlooked because striking is not the pure BJJ apparently.
Same idea for something like a two handed front choke. Yes, you can duck your head out, you can standing armbar the guy, etc. But it's way easier to just realize that the guy choking you now has no free hands to defend himself, use one of your two free hands to collapse both of his choking arms, and use your bonus free hand to elbow him in the face. You can also headbutt. Again, this is all simpler, higher percentage, and tougher to counter than any of the pure grappling defenses.
Most of the striking self defense stuff I learned in Karate is way simpler and better. BJJ is obsessed with using only grappling to deal with everything. It is not the most efficient way.