I didn't and it doesn't matter because you wrote it under this article and so it's related to it.
I'm not saying that it's not true, but it can't be related to this fact.
I don't like the comment "this is why people say the open source ecosystem sucks" because a bankruptcy of a company has nothing to do with the concept of open source.
I second your opinion about not selfhosting Bitwarden.
About email, have a look at Proton mail. All the emails are encrypted in the server and are decripted client side with your password only when you open them.