Since its just one line of code, you should definitely create a pull request for that, simple ones like that are most likely to get merged by epic:
https://github.com/EpicGames/UnrealEngine/pulls
And even if they don’t merge it, it makes it very easy for anyone to just quickly cherry pick that improvement, when needed.
I do need to use scene capture rendering with depth only, and I was not aware of this yet, so thanks very much for mentioning that here! Will definitely help my performance 