Developers at large corporations are strictly informed that they are not the public face of the company and can't do that. These aren't mom and pop developer shops.
Job descriptions are usually something like: "As a Technical Evangelist, you will be the face of the platform and often the first contact our customers have with us, both online and in person."
My guess is that they want to implement the feature but the security burden is so high that it's not worth it. When everyone's ${stereotypical_computer_illiterate_user_of_choice} starts using MFA and losing their 2FA solutions, it may be worth tackling, but until then, I imagine the number of impacted users is relatively low.