Hello, I registered an account just to give my opinion of this. I'm someone that's been following this stuff since the days of navigating Japanese webrings and looking at the URLs at the bottom for hints as where links lead to, so this is something I have a strong opinion about.
This whole thing is essentially a generation gap combined with a cultural one.
You've got the old guard (like me) that strongly feel that futanari and newhalf have strict meanings in Japanese and they should be respected. However, there's the newer people that, over time, have created a separate definition through the expected general obviousness of outsiders.
To most Westerners today, including artists, "futanari" encapsulates anything feminine with a penis. Yes, this has and will continue to cause issues with other tags like crossdressing or shota.
Due to Westerners rarely drawing dickgirls with vaginas (and this has been the case since the dtiberius days) anyone that looked exclusively at Western art would, if anything, expect a new definition for a woman with a vagina under their penis. I feel that this is exactly what happened with what Tarage mentioned above. That artist's definition of futanari is different from the one that Japan has and that people like myself have subscribed to for two decades. Simply put, the artist is wrong for using that word. We had Western inventions like like "dickgirl" and "trap" that were handy in these situations, but this is another generation gap where new people want to change how things are done. However, as they described it as a futanari I definitely would not give it a 1boy tag since these people do at least understand that a futanari is a girl.
There was a site a couple years ago, I think it was one of the rule34 ones, that made an announcement that they "give up" and they would no longer enforce the difference between futanari and newhalf because correcting the ignorant masses was simply too much work. Personally, I've always seen danbooru as a site that's curated and higher quality than most and I expect it to have higher standards. For this reason I think the newhalf tag must stay and ignorance should be corrected instead of tolerated. It can't be "futanari without vagina" because that doesn't make any sense.
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