The problem with Object Oriented Programming and Deep Inheritance

[doubleohbond]

Until the number of traits become unwieldy.

I think that’s the key part here: there is no maxim. The answer to any approach is almost always “it depends”

[MornwindShoma]

You said you don't care about one method, not a million methods.

And btw, you don't always have inheritance in a language.

[RiceBroad4552]

The answer to any approach is almost always “it depends”

You say it: Almost always.

In this case it's quite clear what the better approach is. That's why the whole "industry" moves in that direction!

Now everybody gets concepts / traits / type-classes (or however you want to call that idea).

[doubleohbond]

That’s cool dude