There is an obvious subjectivity regarding how the Force ‘works’ given that a) it ain’t real and b) Lucas was making everything up as he went along. But it’s a little disingenuous to ignore what was heavily implied by the OT - namely that Luke’s journey with the Force was very linear and went (through trial and error) from good piloting and a blindfold trick to full Jedi status in RoTJ.

And don’t forget that Vader (and the Emperor) were impressed with Luke’s powers/progress as early as TESB. The fact that Rey manages to exceed Luke with no training whatsoever (and before lunch it seems) diminishes Luke as a character and the lore in general.

It is established across all 6 films that becoming a Jedi requires patience and discipline and is loaded with pitfalls. That’s why it is such a big deal throughout the saga. That’s why Anakin’s fall and Luke’s attaining Jedi-hood (and Anakin’s subsequent redemption) are so impactful. Rey masters everything without effort. There are no disappointments, no emotional struggles, no lessons, no ‘that is why you fail’, no ‘beware the Dark Side’ (beyond Luke saying “wow, you went to the Dark Side” although it amounted to nothing) etc etc.

I don’t think it’s mere fan conservatism that makes people see that this stuff strains the established lore somewhat.