[aw1621107]

I believe programmers are still free to define specific operators in lieu of the compiler-derived ones for such cases.

I found a blog post which raised similar concerns [0], and P1185 [1] proposes some solutions. I don't know whether they made it into the standard, though.

[0]: https://foonathan.net/2018/10/spaceship-proposals/

[1]: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p118...