ChatGPT desktop app for macOS main executable is not a universal Mach-O but ARM64 architecture only, while all frameworks are both x86_64 and arm64…
and there is no obvious way to report that, even though gpt-4o model from 2024-05-13 says so…
by the way SUFeedURL is https://persistent.oaistatic.com/sidekick/public/sparkle_public_appcast.xml