Blind people can't read it. Its disallowed by most communities. It can't be indexed by search engines. It takes up unnecessary space. Users can't find-in-page for the content or copy-and-paste to share it.
Its bad in every way, and op should receive a temp ban for this.
Of course, you are welcome to start your own community, with blackjack and hookers, and ban whoever you like from it for whatever reasons you deem appropriate.
Nobody should get punished for not going out of their way to make something accessible for 1-2% of the population. At least not a random person on the Internet sharing a meme or whatever.
Do you go around yelling at speaking people for not providing sign language translations for all the videos they share?
I hope that you never have any control over another soul. You sound like the type of person that would abuse the tiniest amount of power if given the opportunity.