Depends. As with Internet forums, the presence of Nazis (or whatever similar bad actor) could ruin it for everyone else.
Let’s say you are a high schooler writing an essay about WWII. You ask Google LLM about it, and it starts writing Neo Nazi propaganda about how the holocaust was a hoax, but even if it wasn’t, it would have been fine. The reason it’s telling you those things is because it’s been trained by Neo Nazi content which either wasn’t filtered out of the training set or was added by Neo Nazi community members in production usage.
Either way, now no one wants to listen to your LLM except Neo Nazis. Congrats, you’ve played yourself.
FYI, the reason no one uses Dall-E is because the results are of higher quality in other offerings like Midjourney, which itself does have a content filter.