Agreed ^
Most of gung fu is outdated.
The movements one uses should be consistent with the perils of the day; I agree that most of the above is in fact quite useless, all except the trapping that is--for the same reasons that have already been stated.
It shouldn't look like patty-cake or slappy hands, it should look like a strong immobilization followed by a pummelling. Just like ground and pound--except standing.
Here's another thought that came to my mind from this thread:
What about the ideal that what is useful to some is useless to others, and vice versa? Remember that every person is different and the individual is always more important than the style/techniques chosen.
What works for you may not work for someone else...
"I don't know if anyone is known with the art of "sitting on your couch" here, but in my eyes it is also to be a martial art.
It is the art of avoiding dangerous situations. It helps you to avoid a dangerous situation by not actually being there. So lets say there is a dangerous situation going on somewhere other than your couch. You are safely seated on your couch so you have in a nutshell "difused" the situation."