As someone who has never really gotten deep into an MMO before, only been playing for two months or less, and didn't start using the forums until recently... I wouldn't have really known 5.0/5.x was a necessary identifier for searching since I didn't realize the game completely changes every year or two, and I wasn't really keeping tabs on version numbers. Nor that cycling through abilities was referred to as a "rotation", or that such management was required for high end content, honestly.
If you solo story content and only really do dungeons as required (and/or do the roulettes but stay quiet and effective enough to not get called out)... this stuff wouldn't really come up until it's too late potentially.
( EDIT: Guess that's the end of this conversation. There's a daily post limit based on level? lol That's unexpected. )