"Nobody would trade the accessibility of information today for half a year stuck below level 40"
I mean maybe not to this extent but I would absolutely make a trade like this. Accessibility of information ruins immersion and the chance to have FUN figuring it out yourself and learning on the fly, as intended. I even think they should delete the PTR and alpha etc should be under NDA or not done at all outside the company. Invest into QA more and have them find and fix the bugs so the players and regain the sense of immersion that's been eroded away over the years and learning things as they do. FFXIV manages to have a nearly bug-free game in comparison to WoW and it doesn't do a PTR etc, they just have a QA team that does its job.
It absolutely sucks knowing everything about an expansion, patch etc before it's even officially released. You can argue you can avoid spoilers but since literally everything is known you're bound to get spoiled on something regardless.