It is fun to watch despite the fact it's missing the historical martial arts techniques aka swordfight, etc.
Like GrannPappy said, it is more about wrestling than anything else. I've been watching HEMA recently and longsword fights with a full armour are about spamming the ennemy. I once saw a guy throwing his sword to hit his opponent in these kind of combats; I was like '' What the fuck it that, for the sake of realism and historical accuracy''.
I also watch videos from a channel called scholagladiotoria and to be honest, they are very well-made and he himself teaches different techniques bases upon medieval and renaissance treaties. I wish I could learn swordfighting but, unfortunately there's no school in my town. I guess I'll go toward fencing for the moment