Not sure I understand, why wouldn't my account get this exactly? I made posts on POB and got upvotes, I never sold anything.

You never staked your POB. If you had, you would've qualified for about 450 VYB in the airdrop. In general, those who stake their POB are those who also don't just earn-then-sell -- that's why we chose that as one of the key metrics.

It looks like you were one of those who 'slipped through the cracks', so to speak. If there had been an easier way to identify those who earned-but-never-sold POB, then we probably would've used that method instead of "those who earned and staked and hodled".