Sorry man but I'm going to have to completely disagree.
He said that e Smythe has let him bench press again after a shoulder injury and you basically tell him to suck it up and go with proven lifts? IMO that is absolutely horrible advice. Please cite where I said this.
I think everyone's goal in life should be to be ABLE to hit the gym for as long as they live. Injuries are something that everyone, including yourself, are going to have to deal with. If you have to change your routine in order to prolong your lifting career, DO IT.
As of right now I can't even bench with Smythe machines. The only machines that I still feel comfortable with for chest and shoulders are Hammer Strength. And I was in the same boat as you, would NOT let the ego go and take bench and military out of my routine because "they are proven bang-4-your-buck exercises."
After 3 reconstructive shoulder surgeries and I said **** it and took it out.
Some guys can't do dips, if pushdowns are the only exercise that doesn't hurt then you do those...and I guarantee Charles P and any other proven trainer would agree with him here.