I also worked with japanese, including on site in Tokyo and quickly learned that asking "did you understand it?" is useless. I always had to keep in mind to ask "what did you understand?".
Cool project, but seems to be abandoned. At one point I was a subscriber to their premium version, but then started getting spam to the (unique) email address I used for the subscription. I emailed them to warn that their account database might be compromised but never heard back from them (this was back in '22).
Also, back then, their map tiles loading had a very high failure rate when loading, so I wrote a custom caching proxy to make it tolerable (which had built-in retry and also cached any successful response for a very long time).
No, he was an old man who cared for his wife with dementia until his death, an experience which changed him. And thus he has chosen to go on his own accord.
Spectre was shown to be exploitable from Javascipt: https://www.zdnet.com/article/google-this-spectre-proof-of-c... - making the bet that this won't be shown the same is not a safe wager I would say :) (especially that Javascript also includes stuff like WebAssembly).
Another reason for NOT self hosting: I want the passwords for my family to be available in the event something happens to me. The probability of Bitwarden being more resilient (at least mid-term) is much higher than any self hosting solution I would come up with.