Is the EARN-IT Act a backdoor attempt to get encryption backdoors?

""It's clear that the bill drafters know they have a huge Fourth Amendment problem if they directly mandate the measures they want tech companies to take, and so they're trying to dance around that by making this byzantine structure that creates a fiction that the "best practices" are just voluntary measures that companies could freely choose to do or not to do," Riana Pfefferkorn, associate director of surveillance and cybersecurity at the Center for Internet and Society, tells CSO."