I think in the US its a matter of getting people back to work as quickly as possible. That mind set of recovery needing to be limited so people can get back to their lives as fast as possible. I think that can be seeded with mis-perceptions, but also is highly dependent on the individual. Our nerves are wonderful feedback structures, and our body has a great self healing response. A balance must therefore be struck.
I had a knee injury when I was in college. Back then the philosophy was to immobilize instead of surgery on younger patients. And after almost 6 months in various forms of casts, PT was not fun. Today, that is not feasible or practical, in the US we are to much of a hurry up and get back up an rolling mindset. My recovery has always kept to one common theme, "moving forward", so regardless of good PT or minor set backs, I rested and recovered during the set backs, but kept what I could do going, often that was stretching.
I have had the benefit of having both a good PT and a bad PT. The good PT encouraged me to move forward, but always watch out for any pain, that would indicate we are doing to much. intermixed with that was the use of daily motion that was less stressful that kept the knee moving and offered cardiovascular and stamina benefits. On the flip side, the bad PT pushed until I hurt something, and because I had spent 6 weeks with a good PT I didn't anticipate it at all. My complaint lead to me being on PT on my own at the same regularity. Fortunately I learned enough from my good PT to do it right, and work for benefit rather than pain. Not that there isn't some discomfort sometimes, but its like the discomfort of a mild stretch, not th sharp pain of a MWU.
The need for us to both care and protect ourselves as we recover and the need to restore and recover what we have lost or long for are always there. I appreciate the comments and the freedom to discuss and share and understand. Without thoughtful and good discussion views and options would not be available to those who needed it. Know they self is the best knowledge to have I guess.