The title is mangled, because someone misparsed the question.
The question is "Is SMS 2FA secure?", not "Is SMS 2FA-secure?" There is no such property as 2FA-secure.
Title should read: "SMS 2FA is not secure".
The question is "Is SMS 2FA secure?", not "Is SMS 2FA-secure?" There is no such property as 2FA-secure.
Title should read: "SMS 2FA is not secure".