Actually there is another strategy in addition to conformity of opinion.

By which you encourage as many people as possible to "form their own opinions" about every thing, creating an infinite number of opinions and beliefs to subscribe to - no matter how meaningless, outlandish, ridiculous, or misinformed they might be.

how many times do you hear "oh, that's just your opinion" used to completely disregard someone else?

when truth doesn't matter, when people only hear what they want to hear and what suits their taste and prejiduce, you can pretty much let anyone have any opinion they want and it won't matter.

confusion and manipulation are what you're left with.

freedom of speech is allowed only because talk is cheap.

just another way to look at the same thing.