On the matter of dmca: the server doesn't accept large uploads, and only accepts pictures. So what will be stolen which is soooo tiny yet so important that grants legal action on a small service?
Also I don't know what people are uploading (and have no way of knowing), so my consciousness is clear. AND people don't use a random site on the internet for such filth, they have their own networks and chat apps. I wouldn't worry about them using my site.