Anyone happen to know why this Tech Zone article got pulled? And would anyone happen to have a copy saved as PDF or something I could reference? https://community.citrix.com/tech-zone/learn/poc-guides/protect-gateway-waf-bot-aaa/

No, sorry. Best I can recall is that this is the things replaced by their secret built-in WAF since the latest 14.1, but hopefully someone has it saved or Citrix updates it on their end.