I don’t think it’s an issue. Luke’s journal was among the Jedi texts Rey took, the rest of which were ancient. No contradiction.
And Luke technically never said he didn’t read the books. More likely Luke read them at some point, but perhaps decades ago, and has not remained devotional.
I agree, although it’s a fair point. It feels slightly incongruent at first blush, but there were multiple “texts” in “that library.”