I know for a fact that right now the rules on x_anus tag is that it is always explicit content, a rule based on the idea that all genitalia is inherently sexual.
I don't agree with this because it doesn't coincide with author intent and differing cultural norms around drawing, and most of all a lot of the drawings tagged x_anus are images that could pass as Safe but Questionable. Not all drawing with x_anus is drawn to be explicit, some are drawn that way for comedic effect, some are drawn that way by stylistic choice, some are drawn that way because in their art culture drawing x buttholes on animals is an accepted norm especially paired with a chibi artstyle.
I agree with the fact that all x_anus drawings are automatically disqualified from being rated "Safe", however I believe other drawings should be rated "Explicit" or "Questionable" on a case by case basis, with two basic requirements of no other genitalia being present and the anus is truly a minimalist and not detailed.
Here are some examples of images I think should absolutely be considered "Questionable" rather than "Explicit".
The character is not in a sexual situation, they are clearly drawn without sexual intent either as a cute stylistic/cultural choice or for comedic intent. Your parents would not bat an eye.
https://e621.net/posts/3368160
https://e621.net/posts/3926372
https://e621.net/posts/3825083
https://e621.net/posts/3401719
https://e621.net/posts/3811911
https://e621.net/posts?tags=yencatx+rating%3Aexplicit
https://e621.net/posts/1175282
https://e621.net/posts/894740
https://e621.net/posts/2902502
https://e621.net/posts/2886229
https://e621.net/posts/2886211
https://e621.net/posts/1997213
https://e621.net/posts/1164269
https://e621.net/posts/1175256
https://e621.net/posts/1904226
https://e621.net/posts/3545636
https://e621.net/posts/2999702
Here are some examples of images I think reasonably should be considered "Questionable" rather than "Explicit".
The character here have suggestive posing or seductive looks, clearly meant to entice or imply sexual intent. Your parents would raise an eyebrow.
https://e621.net/posts/3376158
https://e621.net/posts/3760369
https://e621.net/posts/3813335
https://e621.net/posts/568865
https://e621.net/posts/596860
https://e621.net/posts/2903909
https://e621.net/posts/1251302
https://e621.net/posts/877877
https://e621.net/posts/1054495
https://e621.net/posts/1879305
https://e621.net/posts/3436616
https://e621.net/posts/3147139
https://e621.net/posts/3212190
https://e621.net/posts/3551357
https://e621.net/posts/3785919
https://e621.net/posts/2336589
Here are some examples of images with x_anus and no genitalia that I think should still be rated "Explicit".
They have implied or actual sex acts or fetishes, or they have barely_visible_genitalia or minimalist genitals which while similar in style does inherently have more sexual implications. Your parents would not approve of these.
https://e621.net/posts/2046543
https://e621.net/posts/2655717
https://e621.net/posts/3536168
https://e621.net/posts/3685215
https://e621.net/posts/3280032
https://e621.net/posts/3937747
https://e621.net/posts/3941116
https://e621.net/posts/3868167
https://e621.net/posts/3614033
https://e621.net/posts/3569226
https://e621.net/posts/2370556
https://e621.net/posts/2120131
https://e621.net/posts/34283
https://e621.net/posts/3615512
Now just for the sake of comparison to what is already considered "Questionable": Here are examples of images with visible breasts that clearly have explicit intent and yet are rated "Questionable". Your parents would demand you take these posters off the walls.
https://e621.net/posts/3950278
https://e621.net/posts/3950774
https://e621.net/posts/3883831
https://e621.net/posts/3950281
https://e621.net/posts/3889297
https://e621.net/posts/3898383
https://e621.net/posts/3855012
https://e621.net/posts/3910523
https://e621.net/posts/3886577
https://e621.net/posts/3899679
https://e621.net/posts/3947516
https://e621.net/posts/3870034
(Not hating on any of these or implying tagging on breasts need to be revised, but I think it is hypocritical to think of these as less explicit than the above examples)
So why do I think we need this change?
Because it would make the tagging system more accurate to what the user is searching for, and for how the artist intended their audiences to view it. I constantly see people question and be confused by why something as trivial as an X can make an entire drawing explicit. I see non-sexual drawings made by East Asian artists in a classic anime or chibi artstyle where in their culture their drawing would be completely safe but here it is tagged "Explicit". I see drawings with an x butthole clearly intended to be silly and dumb rather than sexual, or images with x buttholes that are only intended to be cute and slightly suggestive. I think being able to tag these as "Questionable" would be much more fair for those that drew these images, and for the people that are looking for such images. It would expand the use of the "Questionable" tag and make it more accurate.