In the case of Warthunder additions, it is. Or in the case of modified vehicles adding compartments like the Centurion, where idk if the extra 17mm structural steel plate has a spall liner
Well idk what their intentions were previously, but its very understandable that they didn’t for so long. Their awful way of implementing it isn’t great either.
Im more annoyed with their arbitrary cutoff in regards to spalling very clearly being at the detriment of some nations and others not so much.
For the sourcing standards of Gaijin it is. Abrams of often referenced as having a spall liner. Good luck getting appropriate material to push that suggestion. I know its not easy because of how long that thread is before they were successful