I think as an artist, the best reaction is neither a positive comment or a hateful remark. It's too easy to be fake or disingenuous with a nicely typed "great job" or even a mean spirited "fuck you, this sucks. Go to hell, loser".
My personal opinion is that the most valued reaction to an artists creation is confusion. All the heart emojis or death threats in the world pale in comparison to someone sincerely questioning their reality after witnessing my work.
One "WTF did I just watch" equates to a billion people saying "this is dope bro. idk why you not on yet."