Yes, but that's what was written on the webpage in June 2013. Right now we're not even supposed to draw new fanart if we want to respect the creator's wishes :(
The webpage currently says: イラストを描いている方へ できるだけLcdDemの画像を新しくアップロードしないようにお願いします 今までアップロードした画像は削除しなくてもOKとします Which google translates as: "To those who draw illustrations Please do not upload new image of LcdDem as much as possible You do OK even if you do not delete the images uploaded so far" So I guess Koronba is saying it's okay to keep previous fanarts online, but that we shouldn't draw new stuff. And that most likely includes doujinshi and merch (I mean, he wants everyone to forget the existence of the game, and he even asked everyone to delete gameplays and wiki articles, so I think selling stuff related to his game and making profit out of it is definitely out of the question). I wish I knew why...