Dog brothers is a system that tries to be "real" & incorporates techniques from other martial arts.
Real street fights donīt look like Hollywood films.
I would say that anyone who really can have an opinion on it should have at least tried it.
I train in another system but i have visited seminars from Dog Brothers. Remember one youTube video doenīt show the whole system
Apparently their "system" is beating each other with sticks and then wrestling.
It is what it looks like.
The "real-ness" is beating on someone with a stick.
What technique is it other than that? Ordinary footwork maybe. Throw in some punches and kicks.
Is it effective in a fight? Yes, just like beating someone with a club is effective.
Beyond that, other than aggression, there is not much going on.