SAFe is just an attempt to mush something that like looks like agile to delivery teams together with something that fits into more traditional program management, governance, and strategic direction lifecycle models.
There's no particular magic to it, and it's probably better to think of it in terms of being an "enterprise variant of agile" rather than a "humane variant of agile".
The reality is that in some domains there just aren't many developers who are highly motivated, self directed, and thoroughly understand customer needs. Those people just aren't widely available in the labor market regardless of wages or working conditions. So if management doesn't impose a fairly strict methodology then then the program will collapse.
But leadership has to incentivize not just being a ticket monkey, and needs to mindfully empower people. You can't just flip a switch in a feature factory and say "fly my pretties, be free!"
Why would someone with these qualities work for someone else?