Ip Ching on changing Wing Chun (English subtitled)

Ip Ching states Ip Man only taught one kind of Wing Chun.
He hopes Wing Chun to develop but asks people not to pass changes as Ip Man’s teaching.
Could Ip Ching be directing his comments to someone in particular perhaps?

[@KungFuKing166]

This is why I loved Ip Ching - he was progressive and didnt like those that made it sound mystical. He liked exploring what worked, just like his father. I loved training with him.

[@glennrogerjem]

Did GM yip Man Taught him to use the dummy before he died? Or he take a film?