Lol you had me here... Wouldn't you fight in the same way if you knew that this style is highly effective? A lower percentage of received strikes, higher cage control both standing and on the ground. I basically do the same when I train in my gym and I meet someone who tries to outstrike me. Plus, being "nut-hugged", is tiring as fuck: you spend most of your energies just trying to get out while at the same time having to watch out for punches and submissions.