Is descriptor-only parsing via `Context::try_from` intentional?

[KY-U]

Context::try_from(...) accepts descriptor-shaped inputs, while rejecting pure miniscript expressions such as and_v(...).

The public interface Context::try_fromcalls parser::parse, which starts parse_descriptor(), while miniscript parsing exists internally in parse_top_internal() and parse_internal().

Is this descriptor-only public API, while keeping miniscript expressions validation internal, intentional?

Thanks!