> IMHO the fact that the spec is so complex that it is near impossible to implement it correctly should be a big hint, yet people seem very eager to continually stuff more features into the language, which can interact with all the other features in complex ways.

A "big hint" for what? There's not many viable alternatives to C++, and the major contestant at the moment is Rust which has an even more complex compiler. Otherwise all the simpler languages make major compromises to achieve that simplicity, compromises that are unacceptable in more than a few circumstances.