If he mean to say, - "The only ones who don't let themselves to behave as this world wish them to behave,..., even then he must say in a correct way:
"Traditional Catholics are the only ones who can't be controlled."
If he mean to say, - "The only ones who don't let themselves to behave as this world wish them to behave,..., even then he must say in a correct way:
"Traditional Catholics are the only ones who can't be controlled."