Me too, and U2F Keys cost about 8 Euro, other Yubikeys (FIDO2 etc.) about 60. I own one and would be glad, if Evernote added U2F.
U2F already supported by: Google, Facebook, Twitter, Dropbox, Bitwarden, LastPass, and more ...
See: http://www.dongleauth.info/
Evernote stands for security and has a lot of sensitive data stored. I'd appreciate if there is even further improvement by adding hardware authentication.
Thanks in advance! Michael