If you think so, it would seem lost to you completely.
The fruitcakery isn't what makes Kung Fu , Kung Fu.
Kung Fu exists without all the stupid trappings wrapped onto it.
People are violent. Violence can be dealt with vis a vis martial arts development. Kung Fu practice, through teh hard work and progressive understanding will bring us to a place of knowing. KNowing will bring us to a place of testing. Events unfolding bring us to a place of doing.
Bowing to an altar, a blade, a person, etc are all external trappings and have veritably nothing to do with actually development of one's Kung Fu. however, if a person lacks simple courtesy, then these trappings can be used to inculcate courtesy and manners. Etiquette is important too because who wants to teach a little jerkwad and who wants to learn from an ass hat?
Not that it can't be done, but I could think of better ways to find the same thing without dealing with the religiosity or queer mindedness of others.