This seems to be going down into a free for all of people attacking the tech (which is mostly fine) and each other (which is not ok). Since I see no actual useful discussion happening here for a while, I’m going to close the thread.
As a summary, and I put on my robe and style leader / community manager hat:
Whatever we all think of AI use for music creation (I’m not generally a fan and have ethical issues with some of it, clearly some others here find it not a problem at all, while others are a lot more opposed to it still than I am), I think there is no real doubt that data about it belongs in MusicBrainz. So nobody should feel they should not enter some specific music they like or find interesting just because AI was used for it, in the same way we don’t block adding data about Russian/Israeli/American music, or extremist, racist, radical, or intentionally offensive music, or any other sort of music that might be controversial or ethically problematic in some way for some of us.
On the other hand, I think tagging AI music as such cannot hurt and should be encouraged. For people who are in favor of AI music, it is no different than a “piano” tag on a piano recording. For those who want to avoid it, it’s a marker to help them do so. As such, it seems like it has no clear downsides. I’d prefer if people would tag it neutrally and then choose what to do with that information rather than using deprecating tags, if only because if there’s a tag people with different opinions on AI music can agree on, it seems to actually help both sides achieve the preferred situation of knowing whether the music is AI.
That said, my personal opinion is that we should encourage people to not add AI music to the database unless they actually find it interesting or enjoyable or care about that specific music in some other way, if only because so much of it is being made that it would be a ridiculous amount of work to document it otherwise. That is not restricted to AI music specifically though; given the amount of music that was being uploaded to the biggest platforms every day even before AI music was a big issue, adding as much of it as possible just to document all the things would be a mess even avoiding AI altogether. AI music just makes it even more so.
A different discussion, that could be had in a hopefully more constructive way, is how to credit AI music and what relationships to use for it, which we will eventually probably need a guideline for. If someone has good ideas, and can discuss it in a calm way, feel free to open a separate, more concise thread about it.
And a final reminder: