Agreed. Besides, 'The Video Vault' already exists, and that's the function this Niche would serve, albeit with a different name.
These spelling mistakes and other simple fixes in names should be able to be changed without having to go through a week of waiting.
Either way, duplicate by function.
Bittube appears to be a streaming platform but it is external to Narrative, and so should be allowed to have a niche dedicated to it.
The Video Vault is a Narrative niche that I think hopes to be the home for videos people post to Narrative directly.
I may be wrong, but I think that if the person who proposed Bittube makes a reasonable niche name, devoid of spelling mistakes - it should be acceptable.