I trust Wang XiangZhai statement was from a sincere heart but I cannot say the same of yiquan people today. I guess many people can relate better to yiquan than TCC because the former allows some degree of force to be used when neutralizing. It is closer to human natural tendency to use strength to protect self when under threat. However, at higher level yiquan people will have to learn to use lesser force just like TCC, otherwise their skills will reach a plateau and can easily be defeated by an opponent who is stronger.
Actually I don't see much differences in the core concept of yiquan to TCC. Both aimed at unifying the body to arrive at greater strength and develop jin. Zhanzhuang which forms the core of yiquan is practised heavily in traditional TCC too especially Wudang taiji.
Personally, I find Wang's remarks that of 100 people who practise TCC only 1 knows the essence is correct. However, from my observation the same is true to yiquan too todate.