alt Hacker NewsI think it would do the opposite. The regular user posts 5 times per day, but the spammer has bought access to 65536 IP addresses and posts once from each, boosting his posts 5x. And the town in South America with one CGNAT IP address to go around gets censored.
The 65K IP addresses cost 1.638M dollars, thats alot more than they would spend doing the exact same thing today.
The idea is to accept bad actors but make it more expensive and also you can directly identify cliques by IP ect.