That’s the shame of it for his golf game. His swing fit his long body type when younger and as he got thicker (due to HGH/steroids as you say) he had to continually try and modify it to reflect new restrictions based on muscle mass.
Led to forcing more torque out of his knees and opening his hips more to compensate...can’t solve timing issues consistently which is obvious in his off the tee game.
I would bet that as he slims back down (due to drug testing on PGA) he will actually improve if his ego will let him.
The main problem with Tiger is he is playing a mind game now, not playing golf. He will never be great again, imo. He is finished. He will never pass Jack Nicholas’s major win total. And if not, I am very happy with that.
Before he bulked it was amazing the clubhead speed he could generate and still maintain a firm left side. The knee just isn't make to absorb the level of force he placed on it. I think it was inevitable his body would break down sooner than most golfers do.
As for relearning a golf swing. Old habits are hard to break and when it is on the line he will always revert back to what he instinctively knows and continue to hurt himself.
Tiger will never be as dominant as he was because of rule changes. Hitting v groove clubs out of rough with spin and accuracy is a lost art - a skill no longer needed after 1977. That is why you are seeing players who hit a high percentage of fairways off the tee succede.
Woods was nnever an accurate driver. Boxed grooves, however, let him rip many shots out of poor lies with enough accuracy to bring his phenomenal putting game into play. That type of game is gone. Good riddance as far as I am concerned. Boxed grooves changed the game to favor brutes rather than skill.
I noticed that a few years ago he had to shorten his swing, and go 80% to stay in control. He could still follow through, but it would be a pull hook. That’s around the time he was buffing up too. He could hit it farther and straighter as a skinny college kid. His putting ability kept him around for a while, now it’s gone too.
The affairs weren’t the real story though, it was the ‘roids. The Golf media really kept away from that. He was their bread and butter.