Exactly. So many people in this comments section are saying 'well obviously a pin can be cracked' but the point is, the average user does not know this. Once they give their information to Bitwarden, they expect it to be safe. They shouldn't have to understand the nuances of security in order to keep their data safe. If the pin can be cracked, Bitwarden should not offer it as an option or at least explain to users how vulnerable they will be before they enable it.