I don't think C nor C++ were ever great languages for prototyping? (And definitely not better than Rust.)

How is this obnoxious?

C and C++ have their strengths, but rapid prototyping is generally not seen to be amongst them.

This shouldn't be any more controversial than saying that pure Python is generally slow.

They are pretty much the best choice for prototyping 3D apps and GPU algorithms. They're fast, powerful, and don't impose restrictions - you can do whatever and however. It also helps that CUDA is C++.

> They're fast, powerful, and don't impose restrictions [...]

By that metric assembly is the best prototyping language.

You are arguing in bad faith, raising non-issues with obvious answers, making it unfortunately pointless to have a discussion with you.