If I understood correctly, The Reflection part of the Metaprogramming can be broken further into multiple parts like, - Introspection: Code is able to inspect itself - Self-Modification - Intercession: Acting behalf of somebody else

To me, Proxy is more into the category of 'Intercession', isn't it?

Proxies trace back their origin in mirrors/mirages in metaprogramming for OO languages. (shoutout to AmbientTalk) It's a very Smalltalk way of doing reflection and intersection.

Do you mean that it lacks syntactic abstractions to be called metaprogramming?