"When the next page?"
"You're so awesome!!! Unlike me, my work fucking sucks!!!!"
I hate both of these comments. One is someone who is too impatient to wait and thinks they're entitled to demanding things from me when they're not paying for anything. The other is someone who gives me the impression they're fishing for a reassurance (whether that's true or not, that's how I see it).
If I ever got a message like the first one, I will be super petty. I will make a journal about these every comments and link them to that journal. Every time someone asks me that, they get a link to the journal. If you're not paying me for my time and effort, you don't have a right to ask me to "hurry up"
The second one, I'd probably be more softer with. I won't lie, as a kid, I used to do the same thing. However, I didn't know at the time how upsetting this can be to an artist and I grew out of it. No one wants people to feel bad about their level of art skills, and that's what an artist gets when they see these comments. These are not compliments to me --if I have to reassure you because you're insecure about yourself and to not make myself seem like a bad person, it's not a compliment. I'd probably give some advice, but I'd also tell them flat out "this isn't a compliment and here's why".