Originally Posted by
Vyrerus
TL;DR - Devs put training wheels(walls) on our dungeons to try and be fair to the jobs considered as the worse half of the jobs in ARR. In response to this, players asked for pads and helmets and band aids for booboos when the devs then tried to make dungeons interesting in other ways (Pharos Sirius trash packs had raid wide AOEs, paralysis, AOE healing on trash, and other problem monsters intended to make single target damage more viable in a trash pull(i.e. DPS do your job and eliminate problem monsters first)).