We don't owe Jim Davis any kind of respect as an artist. He must earn it.
In the scale you're describing, he leans heavily towards making money and away from the art part. It's OK to feel scorn for this. It's also OK to respect it, but that's not me.
> Art without money is madness
This isn't what my comment was about, but I cannot refrain from answering: art can exist perfectly well without money. I'd say the vast majority of art humanity produces is not related to money at all. It is definitely not madness without money.
> Money without art dies on the vine in obscurity or pays its dues in criticism through time.
Sadly, I don't think the former is true, and I don't think the latter matters enough.