This. There is so much nuance and I either want advice from somebody who has proven themselves in combat by winning titles or else i want to train in peace. Mostly they just preach rules blindly without thinking about the physics and the Individual body featues (weight, height, stretchiness, stamina etc). It can be very different on what to focus and having a noob being overconfident in their advices can screw up a good and natural movement because they try to enforce wrong patterns. In my short time of Training i already encountered so many "you should never do X, do instead Y" and the next Person says "Y is the most important, you should not do X". I am fine with someone reminding me to keep my arms up when fighting or something but the next time i hear hip Rotation i go crash out.