Twitter has revealed that only 2.3% of all active Twitter accounts have enabled two-factor authentication. The low rate of 2FA adoption is an industry-wide issue, with users being discouraged by the overly complicated and non-intuitive procedure they need to go through to enable it. Twitter has been working throughout the last few years to upgrade and improve the platform’s 2FA support, with a clear focus on security keys as the primary 2FA method. Starting this month, security keys can be used as the only 2FA option for Twitter accounts while having all other login methods disabled.
Source: https://www.bleepingcomputer.com/news/security/twitter-reveals-surprisingly-low-two-factor-auth-2fa-adoption-rate/