Stemming the flow of evincible Ignorance. We must try to understand for the sake of understanding.
Fix for Citrix Receiver SSL Error 61 in Chrome on Linux
Found this here, which fortunately fixed my issue with 3 lines:
sudo mv /opt/Citrix/ICAClient/keystore/cacerts /opt/Citrix/ICAClient/keystore/cacerts_old sudo cp /opt/Citrix/ICAClient/keystore/cacerts_old/* /usr/share/ca-certificates/mozilla/ sudo ln -s /usr/share/ca-certificates/mozilla /opt/Citrix/ICAClient/keystore/cacerts