I thought you'd got past all this "if it doesn't look like wing Chun then it isn't " argument? I seem to recall on the other forum you argued with people including Alan Orr about this subject exhaustively. This is all down to perception and belief systems. Why does Wing Chun tend to look like kickboxing when used in the ring/cage?
Well for one thing the art contains all the component parts (and more) that kickboxing DOES contain. Long bridge, short bridge kicks,punches,knees, clinch fighting elbows etc etc. These are the high percentage techniques that work in many stand up systems.
When you get 2 guys from traditional systems, if they do a "showcase bout" where it's all about showing things that make their art "unique" then typically when they get into their respective fighting "stances" and feel each other out, you will see the difference between the Silat fighter and the wing Chun guy but once they clash and "mean it" postures and fancy stances go out of the window, the hands get higher to ensure the head is protected and the trench fighting begins.
Look up the MUSU fights on YouTube where there are dozens of full contact fights between Bagua, Hsing I, wing Chun,Jkd etc.You will see guys who sometimes start by demonstrating beautiful executions of traditional forms before getting in the ring and duking it out. As soon as the pressure is on the "kickboxing" almost invariably kicks in. When I see Alan's guys fight their stand up phases always contain (to me) good wing Chun principles. Anyways, what's so bad about kickboxing anyway?