Not a raider so my opinion is only based on hearsay.

Gordias had a very bad reputation for breaking statics at A3 and the relatively low clear rates for Midas suggest that the raid community has not recovered. SE most likely has a target number of players they want to see attempting/clearing each content for it to be worth their development time. Something like Savage certainly has a lower target number than something like a story instance, but they'll likely still reduce the difficulty going forward if they aren't satisfied by the number of clears.