So, you have no experience about the subject you are talking about, about the discipline you are criticizing...? But you do have anecdotal evidence from 'people'...? Would you care to give us a few details precisely how and what parts of their bodies?Not Doctor Clumsy then? And what's your sifu's name, Captain Hyperbole? Where can we buy the comic?
Dynamic tension sets like any kind of anaerobic isometrics, have their place in a good strength regime, as any good weights-based strength trainer will agree. Horse stance is another such isometric exercise. However, without some kind of supplementary and integrated strength programme the benefits will plateau very quickly.
Push-ups are good again as part of a sensible programme, but if tht is the only resistance exercise you do they are specifying muscle groups more than basic weight exercises like say, squats or deadlifts, and again without increasing the resistance by finding ever more extreme angles (hint: there is nowhere to go after a handstand push-up!) or increasing the weight (eg. push-ups with weights on your back - hence, er, weight training) you're not doing anything other than
maintaining your fitness levels.
Your choice of words is 'have kept me strong' - I suspect if you are as strong as 'people' say, you were strong to begin with (so there is a substantial genetic factor or nurture: you were fighting to stay alive within the pack of wolves who raised you...?!) or the 'people' are puny.
Sure. People whose form is bad or who don't stretch out will screw up more than just their kung fu. But people who rely completely on archaic solely skill training methods and ignore the strength aspects will get screwed up by those who train in an integrated whole body manner. In Japan it's shin, gi, tai (mind/spirit, technique, body) and I'm sure the Chinese have an equivalent... as Laukarbo has pointed out they have some more prosaic versions.
Good luck to you if that's the way you train, or sine you seem to indicate you can handle yourself, good luck to your students if that's the way you teach.
Finally, the fact that you call yourself Gino
sifu and your sig includes a silly face
, quite apart from your tone suggests that you didn't come here to discuss the question you posited, merely to hold court and tell people the 'right' answer. Stick around, you might learn something, 'sifu'.