Merely that those that are "for" something should give the same consideration to those that are "against" it.. Equal consideration in all cases... If I don't want my child taught religion at school, that should be met with the same consideration as wanting my child taught religion at school... Make it an extracurricular activity that the parents have to fill out a permission slip for, if they'd like their child to participate.
The same should hold true in the workplace.. Discuss your extracurricular activities during break time; not during the time you're punched in.. Everybody gets what they want, nobody is made to feel excluded, and life goes on... If your employer states that such discussions are allowed, that's one thing.. But if your boss states that such discussions (and those of TV shows, sports, weather, etc.) are not to be discussed on company time for any reason, then that's the way it should be, without the insistence that some God-given "right" is being violated.
It's not so much "controlled speech" as it is consideration for those around you who may, or may not hold the same views (it may be that such "consideration" is mandated by your employer)... At least during break times, you can choose to participate, or you can choose to take your break elsewhere. During working hours, you may not choose to work "elsewhere" - you're required to do specific things, in specific places, at specific times.
So yes, if that's what Manu was alluding to, then I agree with him. If he was stating that religion should be taught in school to all children, regardless of others wishes, then I disagree...
(If this is going to turn into a big bashfest, and fight, I'm not interested...If not...I am.)