@Knocfelna How about instead you just grow up. Sure, they should do that in private, but I run into it so rarely, that from what I can see by your post, your blowing it way out of proportion to how bad it really is. Its not so common that its everywhere. Its maybe once in a blue moon I see it, and usually only on specific blocks. As the other user said, you can literally turn off all SA via the settings options. Twitch streamers do this all the time to avoid the odd chance they will bump into it. Not because its so prevalent that it could kill someone's enjoyment of the game.
Edit: My whole point is removing symbol arts entirely, because some people are offended at the possibility someone will break TOS and make lewd or flat out NSFW symbol art, is childish at best. SA's are a fun way to communicate in game, and shouldn't be removed because of misuse. If anything we should have better means to self moderate in such a way, that there are filter systems for art, and NSFW art has to have a tag on it, so people that don't want to see it, don't have to. Simply telling people not to do it, won't work, making it a bannable offense is bad for business, and outright removal of the SA is just as idiotic.