I've changed an index and during stage it generated a file containing a comment “Uncomment drop statement after ensuring it is performing the correct actions” - it's correct. I do think that the previous SQLcl version emitted a warn during stage, like this:
"WARN: Your changes contain changelogs with one or more DROP statements. These statements are commented out in the changeset and must be manually uncommented prior to execution. This is done to ensure no destructive operations happen without notice."
No such warn in sqcl version 25.1, db version 19.26 EE. I would miss that, would I not read the artefacts carefully.