I smacked into this in a recent campaign.
Two of the PC's had backgrounds that they were from the Feywild. One was an owlkin, the other was dragonborn. Both fantastic players that I love to pieces. We were running the Candlekeep Mysteries campaign.
So, in one of the adventures, the party travels to a town that has been destroyed by Meazels. The evil fey had driven everyone into murderous rages that resulted in the entire town murdering each other. So, the party comes in, tracks down the evil fey who flee into the feywild through a portal to the feywild.
Now, this is where the total breakdown in expectations came in. And, I will freely admit, this was 100% my own fault for not talking to the players beforehand. See, to me, I see the Feywild as a horrific place where fey torture and murder and/or destroy the minds of anyone unfortunate enough to enter. It's a place that makes Ravenloft look like a picnic. The fey see any mortal as a pet, at best, to be treated like a pet and at worst, a toy in the same sense that your pet cat has a toy.
So, the adventure that I had laid out after they entered the feywild completely blindsided the two players. One player kept insisting that this wasn't the feywild at all and it was actually some sort of hell and refused (out of character mind you) to accept that this was the Feywild. The other player imagined the Feywild to be something like Grimm Fairy tales - sure, it's a bit dark and dangerous, but, overall, not a totally horrific place to live. My interpretation of the Feywild is a Kafka-esque hellscape of gaslighting and mental torture. Alice in Wonderland without the PG rating and Disney ending. Far more Pratchett.
The adventure totally broke down with the players being totally baffled by the scenario because it ran so counter to their expectations.
Again, I take total responsibility for this. It had honestly never really occured to me to think of the Feywild as any sort of nice place. Total mismatch in ideas.
But, this does rather dovetail with your example. The descriptions of the Feywild, such as they are (note, this was years before the Witchlight adventure came out) meant that all three of us were totally correct and totally wrong at the same time. I guess, at the end of the day, that does rather nicely encapsulate the Feywild, but, it doesn't really lend itself well to making a good game.