I've seen a mass of low-effort AI art plague into Pixiv, commercial booth, and now they are invading ArtStation. AI can be a great assistant tool for practicing and improve your own style. Unfortunately, most of self-claimed AI artists basically abuse technology just to earn popularity and social attention. AI tools (such as NovelAI) also takes bunch of image from image board (danbooru) which reupload original artwork of various artist regardless of permission. AI doesn't learning, but stealing and copying someone else artstyle in general.
This is the reason I don't support any self-claimed AI artist and allowing AI generated images in ArtStation is such an insult to art community. If this site really respect time and effort of human hard work, ArtStation needs to step up for policy against AI.