Ironically, the Mac dock that this dock emulates does support both "minimizing" and "hiding" (and always has, as far as I remember).
It's one of those little functionality gaps that keeps people on closed/non-free systems. Is it at least on their roadmap? I'd gladly donate/pay just to get a Mac-like minimize/hide experience.
Ah, okay. Thanks. That's not as bad as I thought, using the click on the dock (that would otherwise do nothing) is clever. Thinking about it, my dock does this as well :)
Or just install Elementary Tweaks.