A private company managed block list is very different in nature to requiring that adult content providers implement age verification, with a human regulatory process that kicks in if they refuse.
Indeed one could argue that by making this a requirement of the website, and making the web safe by default, it negates the need for these overly puritanical 3rd party blocklists and actually increases access to non-pornographic LGBT material. It's a weak argument, but two can play at that game...
https://www.pbs.org/newshour/arts/mississippi-mayor-withhold...
You might have heard of a queer-majority community stepping up to help raise funds to replace what he denied: https://www.vice.com/en/article/wxdpen/mississippi-furry-boo...
Given that similar systems have disproportionately affected LGBTQIA+ groups in the past (whether that's maliciously or not), I think it's a fair point to bring up in response to this new legislation (in addition to it being an expensive waste of time and resources)
[1] https://www.forbes.com/sites/jamiewareham/2022/01/19/92-of-t...