It sounds to me like FB is trying to win over advertisers who really are not interested in the web, except to the extent they can profit from it. And they may learn FB has led them to believe there is much more potential than the results actually show.
Meanwhile, the "consumers" using the web are generally interested in it. That includes ASCII art and LOL, as a means of communication. And not simply to discuss, purchase products and services.
FB is going to fade away. It's just a matter of time.
Because their motives are becoming more and more clear to even non-technical users, these motives are antithetical to the social (cf. commercial) premise of the internet, and they cannot maintain a monopoly on communication through the web, excluding other avenues by being "the only option". Couple this with advertisers who are still patiently waiting for results, results which will never come.
How can you call this anything other than censorship? There is no profanity, no objectionable content whatsoever in the post.
It's not "isolated", it's "targeted".