What is the reasoning behind the lack of conversions when passing parameters

[Carl Sturtivant]

On Saturday, 3 February 2024 at 03:19:00 UTC, Walter Bright wrote:
> I tried to make overloading in D much simpler, but it's still 
> overly complex.

It is apparent that it is overloading and `alias this` in its 
present form that are the mistakes. Not the initialization 
mechanism.

Without that pair of mistakes, having parameter passing being 
initialization would be as simple as, well, initialization. 
Surely we don't think there's a design problem with 
initialization implicitly calling constructors?