That's even worse as it doesn't obey the rules of the universe that they literally just set up. The idea that he's 'not ready to wield the power' is an even weaker plot device as it is no different from a 'promise not to use your time travel powers' like Hiro from Heroes back in the day.
If they are dealing with life and death, the ultimate decision in life surely, and the(which in and of itself suggestsability to bring anyone back from the dead, never mind) they need more than a "when you're ready" especially as he's alreadythere is no God in the MCU.brought a co-star back from the dead
99.9% of viewers aren't going to care about this, and it will absolutely have no impact on viewer reception of the MCU moving forward. That's my point. To you (and others) it might, but this isn't going to cause the public to stop going to see superhero films.