Another one that I did for 20 years hurting my shoulders and elbows along the way. Thanks Arnold!
So, this all basically boils down to the old adage, "One's man's meat is another man's poison".
An exercise that's worthless for one guy does wonders for another. Even Arnold experienced that with preacher curls. He had that exercise pushed on him because he trained at Vince Gironda's gym and that exercise was the one that Larry Scott did to blow up his arms.
Arnold said he later reduced his usage of preacher ("Scott") curls because, while they did wonders for Scott, they did far less for him.
Squats are in the same boat. In one magazine, you have two USA champions talking legs. One sings the praises of squats (1999 USA winner, Melvin Anthony); the other declares that squats suck (2000 USA champion, Bob Chicherillo). Both had great leg development, yet the advocate different exercises to get there.
I don't train to failure; others swear by going to failure. Is one "bro science" vs the other?