Don't get me wrong. I wish the hard hits of 80s, 90s and even early 00s were still in the game.
What frustrates me is the constant changing of rules and interpretations to suit the style of game they want to see. That they then do not enforce it properly or with anything close to consistency. If they want to protect the head and the player with their head over the ball fine, but do it properly and consistently. There should be clear guidelines to follow, not some rubbish grey area that can be interpreted and graded one way one week, then completely differently later in the season.