I'd probably want some way to understand whether secret.Do is launched within a secret-supporting environment so that I'm able to show some user warning / force

I'd probably want some way to understand whether secret.Do is launched within a secret-supporting environment so that I'm able to show some user warning / force a user confirmation or generate_secrets_on_unsupported_platforms flag. But, this is probably a net improvement over the current situation, and this is still experimental, so, changes can happen before it gets to GA.