What causes problems in raids are players that don't learn or struggle to adapt in challenging environments (usually pug so see this a lot). The Savage fights are intended to be difficult for a reason and especially in those first couple of weeks when players are only at the minimal ilvl (or slightly above). Almost everything about Savage is scripted and once a player gets that down, it's very easy to just dance your way through the fight, knowing where to go, what to do etc. If anything casual content should have more soft enrages to encourage players to work harder and use all of their toolkit.