to be fair , the film makers actually acknowledge in The Last Jedi that Rey’s powers are not the norm . Snoke says to Kylo , "you were unbalanced , bested by a girl who never held a lightsaber "!
The film makers do but, more importantly, the characters within the film don’t. For example Yoda trained jedi for years, including Luke. Very difficult task but Rey doesn’t need any at all. Yet Yoda doesn’t say “Amazing this is. Need to watch her we do. This much power, pull her to the dark side it can” or anything like that at all. No one bats an eye as if this is the norm.