Hi @dismad, Colin from ChainSafe here. Thanks for your feedback! This message is a bit misleading and we are working to clarify and update it.
To clarify, ChainSafe does not have access to user’s spending nor viewing key. Furthermore, the viewing key is never stored, sent or logged in any way on the web wallet side.
It is not possible to have a complete webzjs wallet running in the snap environment so a viewing key is needed in the browser local environment. The webzjs web-wallet is running locally in the browser so it needs the viewing key to create an account users can interact with. The spending key never leaves the snap environment.
I hope this clarifies what is going on and makes you all comfortable with using the snap. If you still have any questions or concerns regarding this or anything else, please let us know.