Security to prevent unauthorized SIM swaps?

Does Xfinity Mobile provide solid security options to prevent Port-out fraud/unauthorized SIM swaps? This is particularly worrisome to those who trade/own cryptocurrency as your mobile phone is often (unfortunately) a single point of failure, with many well-reported attacks via SIM swaps. Passwords and 2FA are OK but each have issues. For example, Xfinity uses text messaging vs authenticator apps (Google, Microsoft) that are typically rated stronger and not subject to man-in-the-middle attacks. Also in searches on Xfinity site I see nothing about a PIN/passcode/security Q to approve an account change. I would like to see a link to an article that deals with this issue and how Xfinity does/will secure the account (per FCC recommendations). Does this exist?