The art is fantastic. If the complaint is that it switches between serious moments to cartoony moments, then they just don't like comics.
Like how is the random dog noses any different then sudden chibi. Also they use it the dog noses in the same way other mangaka artist remove the nose for expression.
I have read a lot so I've read my fair share of stories with bad art, some of them I pushed through and genuinely liked the story but I just don't think this story compensates for the fact that I don't resonate with this art style. just as you said my comment was just my opinion and that doesn't mean that it is bad and others can't enjoy it!

I'm sorry the art is pretty bad so I can't take it seriously