While I agree as a matter of fact that these organizations exist I was asserting a preference rather than an understanding of the world as it is. I view the above list ranging from misguided to shameful stains on our history.

Further I want to draw a distinction between a rating group which certainly encourages censorship but does not have the ability or authority to carry it out and what we are seeing here. The Comics Code Authority worked by voluntary agreement of mainstream distributors and the underground comix scene immediately popped up to challenge it. The Hays code was enabled by a (IMO) bad supreme court decision and after that was overturned quickly crumbled to a more reasonable (again IMO) system of rating. The Parental Advisory labels, despite the intentions of their founders, were reduced to being audio nutritional fact boxes. Any traction they might have got was granted them by distributors like Walmart and collapsed shortly thereafter when the internet changed music distribution.

And I think that all provides evidence that the absolutist view that cancel culture is a grave threat to freedom of expression is largely overblown. Things change over time in unpredictable ways, as long as it's not government enforced, ideas have a way of finding their way out there. It doesn't mean we have to make it easy as a society though. There will always be ways to find extremist literature if you want. It doesn't mean as a generic business owner I have to aid and abet it.