ArtStation had plenty of artist complaining that do not draw anime girls. Not sure of their politics, majority of artist may be left leaning but at one point there was stuff that the left and right had overlap on. And it’s perfectly reasonable for anyone not to be cool with someone scraping millions of portfolios and using your work to train ai without your permission or compensation. Especially when people make an account call themselves a “prompt artist” and start mucking up the feed reducing visibility of actual art portfolios. A frequent prompt used is “Trending on ArtStation” past couple of days that prompt would get you a result of an image covered in anti ai images.