One possible complication in that logic is that even legitimate Bitwarden emails do not always pass…
Not sure to what extent @r722d had manually typed or manipulated the URL before posting it (it seems that at a minimum, they modified the path that says “somethingcryptic…”), but start.bitwarden.com appears to be a legitimate subdomain (which, when used by itself with no specified path, will redirect to https://www.bitwarden.com/).
