Sure man no problem.
I see what you mean with the 50 reps of pull assistance, and the 25-50 reps of push assistance, but here’s my reasoning:
You’re benching and pressing. Those are very heavy, strenuous movements. Face pulls, upright rows, lat pulldowns, and curls, even all combined, don’t add up to the amount of stress than those two barbell presses put on your body. Curls, obviously, work your biceps, and strong biceps, while important, do nothing for shoulder health and posture. In fact, overworked biceps means your are further “tightening” the bicep/shoulder/chest area, which tends to be quite tight due to our posture and pulls your shoulders forward.
Then, lat pulldowns work primarily your lats and biceps. Again, all good to stengthen those muscles. That’s not wrong. But the lats are used to internally rotate the shoulders, just like all pressing movements and most bicep movements. So when you work the lats often (and don’t stretch them), they get tight. And pull the shoulders forward. Which now is contributing to bad posture and potential shoulder issues.
So, what you really want to do is work the upper back. The entire traps, not just the upper part worked from shrugs. The rhomboids, rear delts, and all those little muscles making up your upper back. Those are what’s really gonna keep your shoulder healthy.
Now side note real quick - you may spend an hour in the gym twice a week working your upper back, but then it leaves another 23-24 hours in your day every day of the week where you might not be doing great things for your shoulders. Your posture may get worse throughout the day, you might be bent over a phone or computer, or spend time driving or biking (hunched over), and the countless other movements where your shoulders are internally rotated (rolled forward).
So my reasoning here is this: 5x5 of face pulls once a week may balance out the exact pulling reps needed to equal or be slightly greater than pressing reps, but it is probably not enough to balance out a 24/7 life of doing activites that promote bad posture and to balance out making your primary upper body lifts that you give the most attention to pressing movements.
So that’s why I’d do more. I do 100 reps of face pulls or pull aparts daily, when I wake up, and if I’m pressing/benching, I do 20-40 reps between every set. And my shoulder issues haven’t gone away, but have improved. If I’d been doing stuff like this when I first started, I believe I wouldn’t be dealing with these issues.
Sorry for the length of that, haha. I’m sure if Jim reads this he’ll have a heart attack from this “majoring in the minors” that I’m doing, but I’m pretty passionate in staying injury free when possible and I was just trying to explain this particular issue to you.
Good luck with your training though brother!