jm ÇG}mæyn»î}©nO®Ïé(>½\ð½xøºëÝLposting wouldn't have any effect against a determined attacker. Even reddit only works against non-determined spammers. If you wanted you could easily get around that delay.
https://whatsonchain.com/tx/4e5e307be19ea91ceb6281ef55ad266f0731184b52f7aa5479406c5c77fcc621