I agree. I think the particular flavor they are using now appears to have all sorts of amazing options and features.
Yes we have some issues but I'm fairly sure that's due to the implementation and not because of any real limitations to Star Engine.
An example of implementation not-best-practices: elevators.
For whatever reason, elevators have not worked consistently and we have experienced this in CryEngine, Lumberyard and Star Engine.
At times, they have worked beautifully so we can't really say the software is garbage.
But then, for whatever reason, they stop working as intended; I take this of evidence of improper implementation.