I'd better say right away that if this gets flagged and a moderator thinks it'd be safer to remove both my posts, then that's fine, if that's the official opinion of the site. That would not agree with my opinion, but I am new here (though not at all new to cats). Irl, I've known both sides of...
He's a handsome boy. You've had him a year? Age 1 year is just exactly when one of my cats settled down from being a real hellion, so he may do some of the calming down on his own.
First of all, this is not entirely your fault. Your rough play didn't ruin him by itself. He should have learned...