had enough,
did fail there instructor test twice due to situational awareness..
OK, it sounds as though this person has difficulties. But NOTHING you told us so far proves that he/she can't learn from those difficulties and improve. If you are a person who is willing to learn, anything like those things you've mentioned pulls you up, makes you look closely at your flying, your decision making, who you are, how and why you habitually do things, etc etc etc etc. If you know you have a problem with situational awareness, you can learn ways to compensate. Ditto for other similar problems.
But some people don't do that. They blame others, or say it was bad luck and could have happened to anyone. Such people DO have problems.
We have no way of knowing which camp your hypothetical pilot falls into. Having accidents/incidents happens. Failing an instructor test is easy to do...maybe even twice. It does appear as though this person isn't the greatest pilot in the history of rotary aviation. But on the knowledge we have, that's all I can honestly deduce.
Who are you anyway? Do you have to decide whether to employ this person? Is it you, and you quite understandably don't want to tell the world? Why the interest?