Exactly.
I am pretty muscular and people always ask me about working out. Guys who look like they barely work out will tell me that they just can't get results with machines. It's the same shit- moving heavy weights. There is no way you are not gonna get stronger or bigger if you do it consistently.
There is value in free weights, though. When I first started lifting, I focused on safety and stuck solely to machines. My strength increased, but I was surprised at the disparity between what I could lift on machines vs. free weights. I had trouble balancing moderate weight on bps even though I did pretty decent numbers on the smith and stack. However, I feel that machine work helps me break through barriers a lot more effectively.