If Taijichan is closest related to Taoism beliefs, why is Buddha’s Warrior featured so prominently in both routine one and two? It appeared 4 times in Routine 1 and 3 times in Routine 2.
Few possible reasons :

Chen Village, ChenJiaGou is in HeNan, China which is where the famous Shaolin Temple is. Therefore there was some influence of Shaolin marital arts in taijichuan. Chen WanTing the founder of Chen Style combined the various marital arts into one. Was Buddha’s Warrior Pounds the Mortar in his initial “innovation”? No …

i found this article on the web Tai Chi can reduce falls in older people. Read it to find out more about the study they did.
One reason why China promotes taiji in the 1970s among its citizens is really because of the health benefits. Its social system couldn’t afford to pay for high medical cost so it makes sense that health of its senior citizens should be good and maintained at a low cost. I supposed that is why the late Deng Xiaoping wrote “Taijichuan is good”