I am assuming you are referencing Embiid. He is a pretty poor example of this (at the moment) because I think there was some doubt he would ever be able to stay healthy when he it was announced he would miss his entire second season.
With someone like IT this is his first major injury ever and serious people in the media (not just posters here) are speculating that it is a very serious long term problem. When was the last time a player had one injury like that and everyone starting speculating it was a career ender when the guy was 28? I honestly don't remember something like this, doesn't mean I am not forgetting stuff. However, the Embiid situation is a very different animal... I don't remember the timing and severity of brandon roy's injuries.
You didn't say you were being so specific, but anyway, even there I disagree, it's not really a single "major injury," right? Some of what we are reading in this article and elsewhere is saying that there have been other injuries, and that this is the effect of things that have been going on for years, there's a chronic condition and it's never going to get better. So in that sense this is more Brandon Roy than Shaun Livingston.
But what's different is that no one knew about it or viewed it as such until now. Very unusual. Whether it was IT or medical staffs or both, this was very much under wraps. For good reason.
This would also explain the Cleveland situation, in the sense that the current injury is one thing, but the long-term chronic stuff is something almost no one knew about, so they were a bit taken aback.
That's my take anyway. If any of this stuff is true (and there's no way of knowing at this point), IT's hip is a long-term issue that could go back at least a couple of years, is maybe even congenital, and what we are seeing now is just the impact of repeated stress and injury over time.
Or, it's all being overblown and he will be fine. Only time will tell.