But if some are marked unsafe and others are not it gives a false sense of security if something is not marked unsafe.

So we shouldn’t mark anything as unsafe then? And give no indication whatsoever?

The issue isn’t that the word “safe” doesn’t appear in safe variants, it’s that “unsafe” makes your intentions clear: “I know this is unsafe, but it’s fine because of X and Y”.

Maybe we should add the word safe and consider everything else as unsafe

Like life, things should default to being safe. Unsafe, unexpected behaviours should be exception and thus require an exceptional name.

Legacy and backwards compatibility hampers this, but going forward…