It was created for frequent travelers who know the customs declarations rules to minimize time CBP officers have to spend asking questions — just like Nexus and Sentri, the focus has always been on customs.
The information sharing it focuses on is also customs based — it’s why you have countries like Argentina, which has a top calibre customs enforcement agency, having GE but not ESTA. It’s a program to minimize customs screening, with security being a secondary focus — they primarily screen for security while you’re in the air, not at the airport, so a fast track on that doesn’t cut down on time spent with the officer.
Its why people who travel to those high risk countries get sent to secondary but don’t have GE revoked, but people who order off-brand iPhone cases from Temu get it revoked. Same with my friend with a S clearance — he’s not a security risk at all, otherwise he wouldn’t be cleared, but he’s a customs risk.
Obviously travel to non-friendly countries might slow it down, but unlike ESTA it’s not prohibited to have travelled there. You’ll pretty much always get an auto denial if you’ve ever had a customs violation, though.