Facebook has to do "anything" here, because they are the ones implementing the format. If they want users to accept the change, they need to slowly phase out jp

Facebook has to do "anything" here, because they are the ones implementing the format. If they want users to accept the change, they need to slowly phase out jpeg via this Download button. What is much easier? Waiting for the next version of Photoshop to come (if you need built-in support for WebP, or APNG or whatnot) and splash out $1000 on that or making facebook put that small link on photos? You decide.