This is an easy mistake to make but it's not what happened

Programmers already knew (~20 years ago) when the C++ move feature was designed that what people want is the destructive move assignment semantic, the thing Rust has today. Other languages did have that. But C++ 98 already existed and WG21 already did not want to make it difficult to take your crusty 10+ year old C++ codebase, slap a sticker on it and say this is "Modern C++"

The C++ "move" proposal is slightly sneaky, it admits that what they're proposing is not the destructive move (again, people know they want this) but it gives the impression that if they really want destructive move they can add it later, without revealing what's really going on underneath.

In fact C++ move is roughly what Rust would call core::mem::take, we move something in the usual way (a destructive move) but then we replace it with some value of the same type, in the case of core::mem::take it's Default::default()

To enable this, C++ is full of types which look superficially familiar to a Rust programmer but have a weird "empty" state to provide that default value where none would make sense. For example std::unique_ptr<T> looks like it's Box<T> but it's not, it's actually Option<Box<T>>, even newer types often do this but they might be more embarrassed about it.

[Edited to clarify timeline]