If someone shares an entire content from someone else's website without attributing the original content, the intent is pretty clear. They just want to make money out of the same without giving the original publisher any credit for it.

That being said, sharing a content with a link to the original URL is perfectly fine according to me. I mean that's how we share links, images and videos on Facebook as well. Most importantly, we get to see such interesting stuff due to the Steemit post, so in that case, the author of the post deserves some credit I guess.

In conclusion, I believe sharing is absolutely fine and earning some money for that too. But, without attribution is nothing but stealing.