that is literally not what's going on given the content of the article. As the article points out the self imposed regulations do not only concern minors or ill

that is literally not what's going on given the content of the article. As the article points out the self imposed regulations do not only concern minors or illegal content, but an entire plethora of sexual content. From furries, to 'vampire porn', to depiction of aliens, any mention of blood (a livecammer giving the example of not even being able to mention the word 'period') and so on. The topic is not mastercard/visa indirectly enforcing the law, it's a private institution pushing their own sexual morality on others, by virtue of controlling the payments industry.