Sure, but the more structure your video has to have, the harder it becomes to hide information stenographically within it. Your information density will become very low I think.
I completely disagree. Putting builtins on some special pedestal and demoting user-defined classes and functions is always a mistake IMO. I also don't see how this is a reasonable approach even in the cases you mention. If map is polymorphic, but I can't define polymorphic classes myself, it seems impossible to define classes that can hold arbitrary maps. So I can't even wrap map.
Also, if I'm reading https://go.dev/tour/moretypes/15 correctly, append is a variadic function and not a polymorphic function. That's something very different.
You're talking about backed stablecoins which are only a subset of stablecoins. In the common usage of the term, stablecoins include both backed stablecoins and algorithmic stablecoins.