Even though curation is very underrated, think about how many ask why you upvoted their post compared to why you downvoted them,
This is a profound question.
I would say it is assumption, expectation and entitlement. People are hostile getting downvoted and ungrateful getting upvoted and assume they deserve reward regardless of behavior, expect to receive regardless of what they give and are entitled to value regardless of what they offer the market.
Looking forward to the mess that will ensue after hf21 and then seeing what we can build from the rubble :)