All rookies are already dumped into Rookie Chat, which is occasionally moderated (I guess more so in EU and US TZ than in AU TZ). I would ask CCP to make sure there is active moderation at all times, but especially if they’re not taking further measures to fight the spam.
Also, next to “Report ISK spammer” we need another right-click report button for reporting referral link spammers and other rule breakers. Ain’t nobody got time for using F12 or something else with more steps to report these annoyances.
People will just end up ignoring the channels that get spammed.