Not sure if my memory serves me right but I vaguely remember there being a general "rule" that posts that are 70%/80% quoted fall under the plagiarized category.

As for spinning. I suppose it depends on how it was spun.

I think the important message to pass across is that if one truly wants to be successful on this platform and gain a following it is highly recommended to create 98% + original content and if you are borrowing material to always give credit.

Creating 100% original content is not hard at all. Take a damn selfie and introduce yourself. Take a photo of your surroundings and talk about your day.

No need to try and sound/seem smart or look elsewhere, just be yourself because that's guaranteed to be original.