What I'm worried most are that most people are not even aware of what is DNS and how to change it.

I can't imagine those who are caught in the chaos with only their phone and unable to access information that could help them to be safe.

Generally speaking, the general population that wants to use blocked services will develop enough technical know-how to circumvent it. The biggest risk is that there are bad actors giving malicious advice and to such learners, looking to defraud or otherwise exploit them.