**Response to @yoyoel:**
Proof-of-humanness is more straightforward. Most spam-fighting is a numbers game: Your objective is to raise the costs on spammers until their losses exceed their gains. When you do that, the spammers go away, and you win. $8 per account raises the costs of spam A LOT.
https://nitter.moomoo.me/yoyoel/status/1589804651779870720#m