Hellblade II is 30fps on Xbox Series consoles

[EpicRandy]

Chrkeller said:

Targeting 30 fps today is unreasonable. Targeting the same fps for 20+ years is laughable.

You may find it personally unreasonable but the industry in general has not. If it was the case you would not have most titles proposing between both 30fps and 60fps. Even most title on PC offers you the ability to cap FPS at 30. 

15 FPS - 20 fps on the other hand I do not recall seeing those options for like 15+ years so that can be viewed as that the industry now finds unreasonable.