I think the expectation for comments depends more on your readership than your work. Some readers will ALWAYS leave a comment if something strikes their fancy. Other readers leave comments, I think anyway, as a "Hey, I'm liking your work". I've noticed there are also readers who comment like it's their job to critique your work. I am in the group who just doesn't leave comments. If I'm liking a piece, I might leave a like but I'd rather keep reading than think of a comment to leave on every page.
I don't get a lot of comments on my work. While it always boosts my mood when I get comments, I'd rather see people bingeing or coming back to read more chapters as I put them out.