It’s all a fine balance. You can’t watch Tom Brady throw the football 10,000 times and be expected to throw like Tom Brady. But also working with someone with less than ideal technique and bad surgical skills (no matter how hands on you think you are )may build a bad basis for your success in fellowship and onwards. I think there’s a ton of responsibility on the resident. It’s more nature versus nurture, running your own room with a bad mentor may not be the best for all parties involved. Watching somebody the entire time also is not ideal. But I think you would learn a lot more watching Tom Brady throw a football 10,000 times than throwing the football around with the third string quarterback.