Much has been and more will be said and done on this subject.
IMO it depends on the individual whether or not weight training will enhance or impede WC progress.
Strength per se is not a problem, it is relying on strength to make up for poor structure, leverage, and technique that is the problem. Superior strength channelled via correct structure and technique will make for superior performance.
My Sifu is a pretty avid weight trainer - he certainly has few problems with speed, positioning, technique, mobility or structure. His Sifu, on the other hand, used to ask him why he wasted his time. But my Sifu felt it worked for him and kept at it.
The oft-presented argument that Yip Man/Wing Chun/Ng Mui didnāt train with weights so neither should we doesnāt fly - itās possible that a sensible weight training program would have enhanced their abilities even further.
Few elite athletes dispense with weight training in modern times.
I would recommend you try out a program for a few months and decide for yourself whether it works for you. If it works, great, if not, drop it. Whatās good for you might be bad for another and vice versa.
You might try
routine 1 or
routine 2
as starting points. They are written for and by a boxer, but IMHO are still good.
To address the joints/muscle issue, it is true that the muscles provide the motive force. However, the joints act as levers and pulleys which if used correctly (alignment and sequencing) can greatly enhance the efficiency and effectiveness of movement, giving greater ābang for your buckā and allowing you to perform effectively for a longer period before you get gassed.
Also, the tendons and ligaments, as well as the muscles have elasticity - good boxing and grapplling technique often involves āloadingā or āpre-stretchingā the tissues with potential energy like a rubber band, and then releasing the stored energy to fire the payload.
A lead hook in boxing tends to be slow and weak if you just try to āpushā it using the muscles of the arm and shoulder. If instead, you pivot on the ball of the lead foot to load the hip (iliofemoral ligament), then the anterior dletoid, pec and bicep, then release the punch with āwhipping powerā, you have a fast, powerful hook.
There are those who argue that this type of body mechanics is synonymous with fa-jing.