The size of the "Hodlers" category seemed surprising to me.

I was also very surprised. It's amazing that someone left the accounts with such large sums of money. I think most of them have lost their access keys. Although this is also strange. How can keys to accounts with thousands of dollars be treated so lightly.

It seems to me that economies work better when things flow, not when everything is static.

I think you are right, at least you have convinced me of your point of view. Cryptocurrency must "live", circulate. Having a huge fund will always be a threat, because there will be someone who wants to get access to it.