I think it’s completely dependent on your goals. If muscle mass and hypertrophy is the goal then nothing will get you there quicker than barbells. But I’ve also seen guys that were jacked and did nothing but body weight programs. A few years ago I did Wendler 5/3/1 for a couple of years and in my late 50’s I was stronger than I’ve ever been in my life. But it came at a cost. My CNS stayed taxed all the time and I felt like I was in a constant state of recovery and soreness. Once the weight got high and the easy newbie gains were over I got to the point of dreading to go to the gym because I knew how much it was going to take out of me. I finally decided GPP, feeling good, and not being sore all the time was more important to me than how I looked in the mirror. Doing S&S A+A style filled the bill in spades. Yes I lost a little of the mass and strength but not much. Before I could DL over 400lbs but I guarantee I could walk into the gym today and DL at least 350 with no problem and I haven’t trained the deadlift in over 2 years. I’m not looking to be as strong as I can possibly be anymore...just strong enough.