It really makes me not wanna read their work, especially if it's coming from a complete stranger.
I don't know them, and I haven't talked to them before. They're just someone who's coming onto my personal page, by random it feels, and just advertising. They can do that perfectly from their own wall, their own social media, and just by talking with me. Not posting directly on my wall and expecting me to read. It's kinda the equivalent to popping into my DMs, not even saying "hi", and shoving your work in my face.
Now, if it's from a creator I know, that's something different. Because I will have already known that they're working on that comic, and they would've advertised it on their social media or even here in the forums, showing pieces of work as they go along. Moreover, in a general sense, I would've already express interest in seeing their work beforehand. So in this case, them posting their work on my wall would just be them finally showing me that they've posted, and now I have a place where I can go look. Either that, or we've talked about any comics they'd recommend to me, and I'm checking them out.