It's not a myth at all, an other TBC prject is currently doing it pretty seriously (Ecnounters, Mechanics and gear...). I'm not asking for the exact same thing but saying you can't find pre-nerf value is absolutly false
Well... If it's easy it will be puggable, what's the point of buying gear if the content is 100% puggable? There is not, few ppl will buy anyway but not a majority. If content is hard as ****, bad people & good people will buy gear since content is challenging and some item like DST are needed by half of the raid !
Think about PvP too, it will be awfull if PvE content is easy and puggable, particulary is S1.
I did not test anything of the PTR yet, as there is no guild who match my criteria but now i'm looking forward to test it but don't count on me on the 20th may if the content is realy in post nerf state, litteraly no ****ing point to play nerfed TBC.