What you're speaking of isn't so much "what makes a Haiku", but "what makes a Haiku good". It is very common in poetry to follow all the rules and still suck.
The things you quote and say about good haiku apply to pretty much any art form -- the ability to move the reader is so much more important than the ability to follow the rules strictly. However, like with most arts, you should learn to follow the rules well before you break them. It's like use warnings; -- there are appropriate times to turn it off, but it is rare and only done when one has already understood how to work supremely well with it on. In poetry and in code, you follow the rules until what you want to accomplish necessitates bending or breaking them.
.oO all things connect through the motion of the mind