The incremental changes under SERVER-32198 cleaned up the CollectionShardingState/Runtime, but were never backported all the way to 4.0. In order to complete this ticket and have it available in 4.0 we need to finish backporting these changes and this ticket will be used to track that work. When it is done, master, 4.2 and 4.0 will be at the same level of functionality to actually be able to throw SSV in all code paths, when the filtering metadata is not yet known.